CN111028973A - Secondary irradiation production based on electron accelerator99System and method for Mo - Google Patents
Secondary irradiation production based on electron accelerator99System and method for Mo Download PDFInfo
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- CN111028973A CN111028973A CN201911223238.XA CN201911223238A CN111028973A CN 111028973 A CN111028973 A CN 111028973A CN 201911223238 A CN201911223238 A CN 201911223238A CN 111028973 A CN111028973 A CN 111028973A
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- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
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- G21G1/04—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators
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- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G1/00—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes
- G21G1/04—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators
- G21G1/06—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators by neutron irradiation
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Abstract
The invention discloses a two-stage irradiation production based on an electron accelerator99The system and the method for Mo comprise an electron generation section, an electron acceleration section, an electron-photon conversion part, a first target irradiation part, a photon-neutron conversion part, a neutron moderating and shaping part, a second target irradiation part, a first cooling part, a second cooling part, a third cooling part, a fourth cooling part, a first collection part and a second collection part. The invention proposes99The Mo production system has the characteristics of compact structure, low cost, convenience in installation, high safety and the like, and can overcome the defects of the existing reactor production mode.
Description
Technical Field
The invention belongs to the field of nuclear technology application, and particularly relates to secondary irradiation production based on an electron accelerator99Systems and methods for Mo.
Background
99mTc is the most used radiopharmaceutical in nuclear medicine diagnosis, accounting for about 80% of nuclear medicine imaging.99mTc has a short half-life (the time T required for half of the nucleus of the radioactive element to decay)1/2)，T1/26 hours. Thus, it is possible to provide99Conversion of Mo into99mTc (decay mode t)1/266 hours) is a desirable choice.
99The main supply method of Mo is by studying irradiation with reactor235U target or98Mo targets, but based on reactors99Mo production has some problems: for example, shut-down of the reactor due to sudden accidents, scheduled maintenance schedules or expired service life99The high activity of Mo poses higher cost and safety challenges for the demand of highly concentrated uranium, inevitable production of unwanted isotopes in the product (requiring expensive separation processes), etc. Therefore, it is necessary to find alternative production methods as short-term, medium-term or long-term solutions. Accelerator-based production is a good alternative. Production of channels using high power electron linacs for safety and economic reasons100Mo(γ，n)99Mo and98Mo(n，γ)99mo is a suitable method.
Therefore, it is necessary to provide a highly safe and economical product99And (4) Mo production mode.
Disclosure of Invention
In order to overcome the defects, the inventor of the invention continuously reforms and innovates through long-term exploration and trial and multiple experiments and efforts, and provides secondary irradiation production based on an electron accelerator99The Mo system can overcome the defects of the existing reactor production mode, and has the characteristics of compact structure, low cost, convenience in installation, high safety and the like.
The invention adopts the technical scheme that the two-stage irradiation production based on the electron accelerator99A system of Mo, comprising the structure:
an electron generation section for generating electrons;
the electron acceleration section is used for accelerating and transporting the electron beam;
the electron-photon conversion part is used for receiving the electron beam current generated by the electron acceleration section and converting the electron beam current into bremsstrahlung photons;
first of allA target irradiation part for receiving the bremsstrahlung photons, wherein the first irradiation part is a target holder capable of accommodating 1 or more100A Mo target disc;
a photon-neutron conversion section for receiving bremsstrahlung photons that pass through the first target irradiation section and converting them into neutrons;
the neutron moderating and shaping part is used for receiving neutrons of the photon-neutron conversion part and shaping the neutrons slowed to be below 1 MeV; the second target irradiation part is integrally a target holder for receiving neutrons below 1MeV of the neutron moderating and shaping part, wherein the target holder can accommodate 1 or more98A Mo target disc;
a first cooling part hermetically connected with the electron-photon conversion part and cooling the electron-photon conversion part by using a cooling liquid circulation;
the second cooling part is hermetically connected with the first target irradiation part and used for cooling the first target irradiation part by using cooling liquid circulation;
the third cooling part is hermetically connected with the photon-neutron conversion part and used for cooling the photon-neutron conversion part by using cooling liquid circulation;
the fourth cooling part is hermetically connected with the second target irradiation part and used for cooling the second target irradiation part by using cooling liquid circulation;
a first collecting part connected with the first target irradiation part for collecting the irradiation light generated by the first target irradiation part99Mo；
A second collecting part connected with the second target irradiation part for collecting the light generated by the second target irradiation part99Mo。
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the electron accelerator component is capable of generating electrons and the energy of the generated electrons should be between 15MeV and 50 MeV.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the electron acceleration section comprises a beam transport analysis system, a vacuum acceleration chamber, a guide focusing system, a power source and high vacuum equipment, wherein the beam transport analysis system is connected with the electron generation sectionThe beam transport analysis system and the vacuum acceleration chamber are respectively connected with the power source, and the beam transport analysis system and the vacuum acceleration chamber are respectively connected with high vacuum equipment.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the beam current transport analysis system comprises: and the device comprises an electric, magnetic field lens, a bending magnet, an electric, magnetic field analyzer and the like, and is used for transporting and analyzing charged particles between the particle source and the accelerator or between the accelerator and the target chamber.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the vacuum acceleration chamber is a vacuum chamber provided with an acceleration structure and used for generating an acceleration electric field with a certain shape in vacuum so as to accelerate electrons under the condition of not being scattered by air molecules, and can be various types of acceleration tubes, acceleration cavities, annular acceleration chambers and the like.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the guiding focusing system guides and restrains the accelerated electrons by using a certain electromagnetic field, so that the accelerated electrons are accelerated by an accelerating electric field along a preset track, such as a dominant magnetic field of a circular accelerator and a quadrupole lens field.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the high vacuum equipment is used for vacuumizing the beam flow transportation analysis system and the vacuum acceleration chamber.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the power source is used for providing power for the beam current transport analysis system and the vacuum acceleration chamber.
According to the inventionThe secondary irradiation production based on the electron accelerator99The further preferable technical scheme of the Mo system is as follows: the electron-photon conversion portion is capable of converting electrons generated by the electron accelerator component into bremsstrahlung photons having an energy interval comprised between 10MeV and 50 MeV.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the electron-photon conversion site is at least one of a tungsten target, a gold target, or a tantalum target.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the first target irradiation part comprises 1 or more100Mo target disk, wherein
100Mo can be produced by photonuclear reaction with photons with energy more than 9MeV99Mo。
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the photon-neutron conversion section is capable of converting photons that do not interact with the first irradiation section and photons generated at the first target irradiation section into neutrons.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the photon-neutron conversion section can convert photons into neutrons; the material of the photon-neutron conversion part can Be one or more of Be, heavy water, BeD2 and depleted uranium.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the neutron moderating and shaping unit can convert neutrons generated by the photon-neutron conversion unit into neutrons of 1MeV or less.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the neutron moderating and shaping part comprises a light neutron channel, a neutron moderating layer and a neutron reflecting layerNeutron collimation layer and photon filter layer, neutron moderation layer sets up around the photoneutron passageway, neutron reflection stratum setting is around the neutron moderation layer, the photon filter layer sets up between photoneutron passageway and neutron collimation layer, and the setting of neutron collimation layer is in the photoneutron passageway export.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: the target irradiation section contains 1 or more98Mo target disk, wherein98Mo can be generated by interaction with neutrons below 1MeV99Mo。
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: a first cooling part hermetically connected with the electron-photon conversion part and cooling the electron-photon conversion part by using a cooling liquid circulation; the second cooling part is hermetically connected with the first target irradiation part and used for cooling the first target irradiation part by using cooling liquid circulation; the third cooling part is hermetically connected with the photon-neutron conversion part and used for cooling the photon-neutron conversion part by using cooling liquid circulation; and the fourth cooling part is hermetically connected with the second target irradiation part and used for cooling the second target irradiation part by using cooling liquid circulation.
A secondary irradiation production based on electron accelerator as described in the present invention99The further preferable technical scheme of the Mo system is as follows: a first collecting part connected with the first target irradiating part for collecting the light generated by the first target irradiating part99Mo; a second collecting part connected with the second target irradiating part for collecting the light generated by the second target irradiating part99Mo。
The invention also provides a secondary irradiation production based on the electron accelerator based on the system99A Mo production process comprising the steps of:
s1, generating electrons by adopting an electron generation device;
s2, accelerating and transporting the electron beam by adopting an electron accelerating device;
s3, receiving the electron beam current transmitted by the electron acceleration section and converting the electron beam current into bremsstrahlung photons;
s4, receiving the bremsstrahlung photons and adopting100Mo target disk for irradiation, bremsstrahlung photon and100the photonuclear reaction of Mo to produce99Mo, then collecting the resultant99Mo；
S5, receiving99Photons generated after the Mo target disc is irradiated are converted into neutrons;
s6, receiving the converted neutrons and shaping the neutrons to be slower than 1 MeV;
s7, receiving neutrons below 1MeV, and adopting98Irradiation of Mo target disk with neutrons below 1MeV and98mo is reacted to produce99Mo, then on99And collecting Mo.
The beneficial effect of prior art is compared in this application:
the invention provides a two-stage irradiation production based on an electron accelerator99The system and the method for Mo can overcome the defects of the existing reactor production mode, and simultaneously adopt secondary irradiation and different irradiation targets for irradiation to fully utilize the generated electrons, thereby improving the production efficiency. Meanwhile, the system has the characteristics of compact structure, low cost, convenience in installation, high safety and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic block diagram of the system of the present invention.
Fig. 2 is a block diagram of the structure of the electron acceleration section.
Fig. 3 bremsstrahlung principle.
FIG. 4 is100Mo(γ，n)99Mo reaction scheme.
Fig. 5 is a schematic diagram of a neutron conversion process.
FIG. 6 is a schematic diagram of a neutron moderating and shaping apparatus.
FIG. 7 is98Mo(n，γ)99Mo reaction scheme.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
Example 1
Fig. 1 is a schematic block diagram of the system of the present invention, in which the electron generation section of the system of this embodiment generates an electron beam with an energy between 15MeV and 50MeV, and this embodiment is mainly performed by using an electron gun. And the electron acceleration section is used for accelerating and transporting electrons generated by the electron generation section.
As shown in fig. 2, the electron acceleration section includes a beam transport analysis system, a vacuum acceleration chamber, a guiding and focusing system, a power source and a high vacuum device, the beam transport analysis system is connected to the electron generation section, the vacuum acceleration chamber is connected to the beam transport analysis system, the beam guiding and focusing system is connected to the vacuum acceleration chamber, the beam transport analysis system and the vacuum acceleration chamber are respectively connected to the power source, and the beam transport analysis system and the vacuum acceleration chamber are respectively connected to the high vacuum device.
Wherein beam current transport analysis system includes: electric field lens or electric, magnetic field lens, bending magnet and electric, magnetic field analyzer, etc. to transport and analyze charged particles between the particle source and the accelerator or between the accelerator and the target chamber.
The vacuum acceleration chamber is a vacuum chamber equipped with an acceleration structure for generating a certain form of acceleration electric field in vacuum to accelerate electrons without scattering by air molecules, and can be various types of acceleration tubes, acceleration cavities, annular acceleration chambers, and the like.
The guiding focusing system guides and restrains the accelerated electrons by a certain electromagnetic field, so that the accelerated electrons are accelerated by an accelerating electric field along a preset orbit, such as a dominant magnetic field of a circular accelerator and a quadrupole lens field. The high vacuum equipment is used for vacuumizing the beam flow transportation analysis system and the vacuum acceleration chamber. The power source is used for providing power for the beam current transport analysis system and the vacuum acceleration chamber.
The electron-photon conversion part receives the electron beam current of 15MeV-50MeV transmitted from the electron acceleration section and converts the received electrons into bremsstrahlung photons, wherein the electron-photon conversion part is at least one of a tungsten target, a gold target or a tantalum target, the bremsstrahlung principle is shown in figure 3, as the mass of electrons is lighter, the electrons receive the action of coulomb force of atomic nuclei in the process of approaching the atomic nuclei, the movement speed and the direction are changed, the reduced energy is emitted in the form of rays, the emitted rays are the bremsstrahlung photons, and the first cooling part cools the electron-photon conversion part in a cooling liquid circulation mode.
The first target irradiation part is integrally a target holder for receiving bremsstrahlung photons generated, wherein the target holder can hold 1 or more100A Mo target disc; bremsstrahlung photons with100The photonuclear reaction of Mo to produce99Mo, reaction process shown in FIG. 4, photon and100mo interaction generates 199Mo and 1 neutron due to photon and100the existence of Mo reaction threshold value, the reaction only uses photons above 9MeV, the first collection part generates on the first target irradiation part99Mo is collected, and the second cooling part cools the first target irradiation part in a cooling liquid circulation mode.
The photon-neutron conversion part is a target with a certain shape and thickness, collects the rest photons and generates neutrons through the reaction shown in figure 5, the target adopted by the photon-neutron conversion part is Be or heavy water, BeD2Or depleted uranium, or depleted in at least one of the uranium,the third cooling part cools the photon-neutron conversion part in a cooling liquid circulation mode.
FIG. 6 is a schematic diagram of a neutron moderating and shaping apparatus, the moderating and shaping end including an optical neutron channel 001 for transporting optical neutrons; the neutron slowing layer is used for slowing high-energy neutrons (larger than 1MeV) into neutrons below 1 MeV; the neutron reflecting layer 003 is used for reflecting neutrons and preventing the neutrons from diffusing to the periphery; a neutron collimation layer 004 for collimating the neutron beam to enable the neutron beam to be emitted along the center; and the photon filtering layer 005 is used for filtering photons in the neutron beam. Neutron moderation layer 002 sets up around photoneutron passageway 001, neutron reflection stratum 003 sets up around neutron moderation layer 002, photon filter layer 005 sets up between photoneutron passageway 001 and neutron collimation layer 004, and neutron collimation layer 004 sets up in photoneutron passageway 001 export.
The second target irradiation part is integrally provided with 1 target holder for receiving neutrons below 1MeV generated by the neutron moderation shaping device, wherein the target holder can accommodate 1 or more98A Mo target disc; neutrons below 1MeV and98mo is reacted to produce99Mo, reaction process shown in FIG. 7, neutron and98mo interaction generates 199Mo and photons, generated by the second collecting section on the first target irradiating section99Mo is collected, and the fourth cooling part cools the first target irradiation part in a cooling liquid circulation mode.
The first cooling portion, the second cooling portion, the third cooling portion and the fourth cooling portion are cooling tanks with circulation loops, cooling liquid is contained in the cooling tanks, the cooling tanks are connected with equipment, and the cooling liquid circulates in the cooling tanks to cool the equipment.
The first collecting part and the second collecting part are commercially available isotope separators, such as TECHNEGEN isotope separators.
The invention provides a two-stage irradiation production based on an electron accelerator99The system and the method for Mo can overcome the defects of the existing reactor production mode and have the advantages of compact structure, low cost and convenient installationAnd high safety and the like.
The electric field lens or electric and magnetic field lens, the bending magnet, the electric and magnetic field analyzer and other devices adopted in the embodiment are all purchased equipment.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (15)
1. Secondary irradiation production based on electron accelerator99A system of Mo, characterized by comprising:
an electron generation section for generating electrons;
the electron acceleration section is used for accelerating and transporting the electron beam;
the electron-photon conversion part is used for receiving the electron beam current transmitted by the electron acceleration section and converting the electron beam current into bremsstrahlung photons;
a first target irradiation part for receiving the bremsstrahlung photons, wherein 1 or more target holders of the first target irradiation part contain100A Mo target disc;
a photon-neutron conversion section for receiving bremsstrahlung photons that pass through the first target irradiation section and converting them into neutrons;
the neutron moderating and shaping part is used for receiving neutrons of the photon-neutron conversion part and shaping the neutrons slowed to be below 1 MeV;
a second target irradiation part for receiving neutrons below 1MeV from the neutron moderating and shaping part, wherein 1 or more second target irradiation parts are accommodated in the target holder98A Mo target disc;
a first cooling part hermetically connected with the electron-photon conversion part and cooling the electron-photon conversion part by using a cooling liquid circulation;
the second cooling part is hermetically connected with the first target irradiation part and used for cooling the first target irradiation part by using cooling liquid circulation;
the third cooling part is hermetically connected with the photon-neutron conversion part and used for cooling the photon-neutron conversion part by using cooling liquid circulation;
the fourth cooling part is hermetically connected with the second target irradiation part and used for cooling the second target irradiation part by using cooling liquid circulation;
a first collecting part connected with the first target irradiation part for collecting the irradiation light generated by the first target irradiation part99Mo；
A second collecting part connected with the second target irradiation part for collecting the light generated by the second target irradiation part99Mo。
2. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the electron energy generated by the electron acceleration section is between 15MeV and 50 MeV.
3. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the electron acceleration section comprises a beam transport analysis system, a vacuum acceleration chamber, a guide focusing system, a power source and high vacuum equipment, the beam transport analysis system is connected with the electron generation section, the vacuum acceleration chamber is connected with the beam transport analysis system, the beam guide focusing system is connected with the vacuum acceleration chamber, the beam transport analysis system and the vacuum acceleration chamber are respectively connected with the power source, and the beam transport analysis system and the vacuum acceleration chamber are respectively connected with the high vacuum equipment.
4. Electron accelerator based two-stage irradiation production as claimed in claim 399Mo, characterized in that: the beam current transport analysis system comprises: an electric, magnetic field lens, a bending magnet and an electric, magnetic field analyzer for transporting and analyzing charged particles between the particle source and the accelerator or between the accelerator and the target chamber.
5. Electron accelerator based two-stage irradiation production as claimed in claim 399Mo, characterized in that: the vacuum acceleration chamber is a vacuum chamber provided with an acceleration structure and is used for generating an acceleration electric field with a certain shape in vacuum so that electrons are accelerated under the condition of not being scattered by air molecules.
6. Electron accelerator based two-stage irradiation production as claimed in claim 399Mo, characterized in that: the guiding focusing system guides and restrains the accelerated electrons by using a certain form of electromagnetic field, so that the accelerated electrons are accelerated by the accelerating electric field along a preset track.
7. Electron accelerator based two-stage irradiation production as claimed in claim 399Mo, characterized in that: the high vacuum equipment is used for vacuumizing the beam flow transportation analysis system and the vacuum acceleration chamber.
8. Electron accelerator based two-stage irradiation production as claimed in claim 399Mo, characterized in that: the power source is used for providing power for the beam current transport analysis system and the vacuum acceleration chamber.
9. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the electron-photon conversion part converts electrons transmitted by the electron acceleration section into bremsstrahlung photons with the energy interval of 10MeV-50 MeV.
10. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the electron-photon conversion part is at least one of a tungsten target, a gold target, or a tantalum target.
11. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the first target irradiation part comprises 1 or more100A Mo target disc is arranged on the upper surface of the disc,wherein100Mo is produced by photonuclear reaction with photons with energy greater than 9MeV99Mo。
12. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: the photon-neutron conversion section converts photons that have not interacted with the first irradiation section and photons generated at the first target irradiation section into neutrons.
13. An electron accelerator based secondary irradiation production as claimed in claim 1299Mo, characterized in that: a photon-neutron conversion section converting photons into neutrons; the photon-neutron conversion part is made of Be, heavy water and BeD2Depleted uranium.
14. An electron accelerator based two stage irradiation production as claimed in claim 199Mo, characterized in that: neutron moderation plastic portion includes that light neutron passageway, neutron slow layer, neutron reflection stratum, neutron collimation layer and photon filter layer, the neutron slow layer sets up around light neutron passageway, the neutron reflection stratum sets up around neutron moderation layer, the photon filter layer sets up between light neutron passageway and neutron collimation layer, and neutron collimation layer sets up in the export of light neutron passageway.
15. Secondary irradiation production based on electron accelerator99Mo process, characterized by comprising the steps of:
s1, generating electrons by adopting an electron generation device;
s2, accelerating the electron beam into a 15MeV-50MeV electron beam by adopting electron accelerating equipment and transporting;
s3, receiving the electron beam current transmitted by the electron acceleration section and converting the electron beam current into bremsstrahlung photons;
s4, receiving the bremsstrahlung photons and adopting100Mo target disk for irradiation, bremsstrahlung photon and100photonuclear reaction of MoGenerating a99Mo, then collecting the resultant99Mo；
S5, receiving99Photons irradiated by the Mo target disk are converted into neutrons;
s6, receiving the converted neutrons and shaping the neutrons to be slower than 1 MeV;
s7, receiving neutrons below 1MeV, and adopting98Irradiation of Mo target disk with neutrons below 1MeV and98mo is reacted to produce99Mo, then on99And collecting Mo.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114121331A (en) * | 2021-11-26 | 2022-03-01 | 中山大学 | Nuclide preparation system of high-current electron linear accelerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121331A (en) * | 2021-11-26 | 2022-03-01 | 中山大学 | Nuclide preparation system of high-current electron linear accelerator |
| CN114121331B (en) * | 2021-11-26 | 2023-02-28 | 中山大学 | Nuclide preparation system of high-current electron linear accelerator |
| WO2023092810A1 (en) * | 2021-11-26 | 2023-06-01 | 中山大学 | Nuclide preparation system based on high-density electron linear accelerator |
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Application publication date: 20200417 |