CN104505135A - Shielding device and method of electron linear accelerator - Google Patents
Shielding device and method of electron linear accelerator Download PDFInfo
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- CN104505135A CN104505135A CN201410785700.6A CN201410785700A CN104505135A CN 104505135 A CN104505135 A CN 104505135A CN 201410785700 A CN201410785700 A CN 201410785700A CN 104505135 A CN104505135 A CN 104505135A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F7/00—Shielded cells or rooms
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Particle Accelerators (AREA)
Abstract
The invention relates to a shielding device and method of an electron linear accelerator. The shielding device of the electron linear accelerator comprises a target radial shield, a tube radial shield, an X-radial outlet shield and a power source inlet shield, wherein the front end of the accelerator is configured in the target radial shield, and a moving block with an X-radial outlet seam is mounted in the target radial shield. An acceleration tube of the accelerator is configured in the tube radial shield, the X-radial outlet shield is configured at the front end of the target radial shield and provided with an outlet opening larger than the X-radial outlet seam, the power source inlet shield is mounted in the position of the tube radial shield corresponding to a power source, and the X-radial outlet shield, the target radial shield and the tube radial shield are sequentially configured integrally and the electron linear accelerator is configured in a space enclosed by them. Thickness and size of various shield parts can be obtained by three-dimensional dosage distribution of X radials obtained according to the Monte Carlo method. The shields can be prevented from being locally too thick or too thin, and extra shields can be effectively reduced or even omitted.
Description
Technical field
The present invention relates to accelerator X ray shielding field, the particularly shield assembly of a kind of electron linear accelerator (hereinafter referred to as accelerator) and screen method.
Background technology
In the prior art, the X ray produced for accelerator is provided with shield assembly, makes X ray leakage rediation level meet concerned countries standard-required.The main Source Term Parameter that accelerator shielding design is relevant has two: one to be X ray yield, and another is X-ray energy.X ray yield more macro-energy is higher, and shielding difficulty is larger.In addition, the electronics after accelerated is after target practice, and the X ray yield produced and the energy size on three dimensions is a kind of distribution, and therefore, the shielding requirements of different parts is also different.
Accelerator shielding design is in the past all carry out design-calculated by empirical method, be difficult to accomplish to consider X ray yield and energy on three dimensions comprehensively, design can exist some local shielding too conservative, and other place shields not enough phenomenon simultaneously, finally, not enough in order to make up shielding, have to again increase a large amount of additional mask in accelerator periphery.Fig. 1 (a) and (b) are the figure of the accelerator shielding device based on prior art, and as shown in Figure 1 (a), (b) shows, existing accelerator shielding device is not all the accelerator shielding device optimized in structure and cost.
In addition, now based on the 3-dimensional dose calculation procedure of Monte Carlo (hereinafter referred to as covering card) analogy method, can provide the dosage distribution of accelerator X ray in shield more accurately, for existing shielding design, directly can reflect the weak link of shielding construction.Fig. 2 is the dose distribution map of accelerator X ray in shield, and in fig. 2, transverse axis is short transverse (unit is rice), and the longitudinal axis is directions of rays (unit is rice).As shown in Figure 2, for existing accelerator shielding, based on the accelerator dosage distribution that 3-dimensional dose calculates, shielding thin spot and conservative position can be known clearly.
Summary of the invention
The present invention proposes to solve above-mentioned problem, its object is to provide a kind of electron linear accelerator shield assembly that can shield X ray exactly and screen method.
In the present invention, cover calorimeter based on 3-dimensional dose to calculate, for such as 6MeV electron linear accelerator X ray, design is a kind of optimizes shield assembly, specify shielding thickness and the size of main shield structure, simultaneously according to shielding thickness and the size of the design feature determination accelerator additional mask of accelerating tube, guarantee the optimization of whole shield assembly structure and size.
The invention provides a kind of shield assembly of electron linear accelerator, it is characterized in that,
Possess: target alpha ray shield, for the X ray that the target shielding described accelerator produces, profile is that the front end of cylindrical and described accelerator can configure therein, and, the loose piece of the X ray exit slit with the X ray outgoing made from described accelerator is housed in inside.
In addition, in the present invention, also possess:
Pipe alpha ray shield, for shielding the partial x-ray that the X ray that produces in the accelerating tube of described accelerator and target produce, profile is that the accelerating tube of cylindrical and described accelerator can configure therein;
X ray exit curtain, is configured in the front end of described target alpha ray shield, has the exit opening larger than described X ray exit slit; And
Power source entry mask, is arranged on the position corresponding with power source of described pipe alpha ray shield, for shielding the X ray of direct projection from power source entrance and scattering,
Described X ray exit curtain, described target alpha ray shield and described pipe alpha ray shield are configured to entirety successively, described electron linear accelerator can be configured in the space surrounded by them.
In addition, in the present invention, described loose piece is arranged on described target alpha ray shield inside in the mode that can dismantle.
In addition, in the present invention, described pipe alpha ray shield comprises: accelerating tube first half section shields, and connects configure with described target alpha ray shield; The accelerating tube second half section shields, and shields to connect to configure with described accelerating tube first half section; Afterbody shields, and shields chimeric configuration with the described accelerating tube second half section.
In addition, in the present invention, the material of described target alpha ray shield is tungsten, and its axis direction shielding thickness is more than or equal to 160mm, and vertical axis direction shielding thickness is more than or equal to 140mm, and relative axis direction miter angle shielding thickness is more than or equal to 170mm.
In addition, in the present invention, the material of described target alpha ray shield is plumbous, and its axis direction shielding thickness is more than or equal to 250mm, and vertical axis direction shielding thickness is more than or equal to 214mm, and relative axis direction miter angle shielding thickness is more than or equal to 255mm.
In addition, in the present invention, the shielding of described accelerating tube first half section is the lead shield that vertical axis direction thickness is more than or equal to the tungsten shielding of 84mm or vertical axis direction thickness and is more than or equal to 120mm, the shielding of described accelerating tube second half section is the lead shield that vertical axis direction thickness is more than or equal to 100mm, and described afterbody shielding is the lead shield that thickness is more than or equal to the tungsten shielding of 130mm or thickness and is more than or equal to 180mm.
In addition, in the present invention, the material of described X ray exit curtain is plumbous, be positioned at X ray outlet both sides, and its agent structure cross section is trapezoidal, bottom width is more than or equal to 75mm, top width is more than or equal to 35mm, and length is more than or equal to 120mm, described exit opening 7mm more than larger than described X ray exit slit.
In addition, in the present invention, the material of described power source entry mask is plumbous, and the thickness of side is more than or equal to 15mm, and top gross thickness is more than or equal to 40mm.
In addition, the invention provides a kind of screen method of electron linear accelerator X ray, it is characterized in that possessing:
Obtain the step of the 3-dimensional dose distribution of X ray;
3-dimensional dose according to obtained X ray distributes, and obtains the step of the gauge of each shield member; And
There is in the configuration of the relevant position of electron linear accelerator the step of the shield member of described gauge.
In addition, in the present invention, in the step of 3-dimensional dose distribution obtaining X ray, Monte Carlo method is used.
As mentioned above, according to the present application, accelerator body shielding construction is optimized, and avoids the situation that shadow shield is too partially thick or partially thin; The use of loose piece in accelerator shielding structure, facilitates accelerator radiation exit to stitch wide change, avoids the replacing of whole accelerator shielding structure; The optimization of X ray exit curtain structure, shielding outlet scattered ray is on the impact of the radiation level of whole system effectively; The use of power source entry mask, strengthens the weak link of whole accelerator shielding, effectively can reduce, even cancel the application of extra additional mask.
Accompanying drawing explanation
Fig. 1 is the figure of the accelerator shielding device based on prior art.
Fig. 2 is the dose distribution map of accelerator X ray in shield.
Fig. 3 is the structural representation of electron linear accelerator of the present invention shielding.
Fig. 4 is the sectional view of the structure of electron linear accelerator of the present invention shielding.
Fig. 5 is the stereographic map of the structure of electron linear accelerator of the present invention shielding.
Embodiment
Below, with reference to accompanying drawing, the specific embodiment of the present invention is described.In addition, be illustrated for the shield assembly of 6MeV electron linear accelerator in the present invention, but, be not limited to this, the shielding of the electron accelerator of other energy can certainly be applied to.
Fig. 3 is the structural representation of such as 6MeV electron linear accelerator of the present invention shielding, wherein, a () is axis horizontal sectional drawing, b () is sectional elevation figure, Fig. 4 is the sectional view of the structure of such as 6MeV electron linear accelerator of the present invention shielding, and Fig. 5 is the stereographic map of the structure of such as 6MeV electron linear accelerator of the present invention shielding.As shown in Fig. 3 (a) He (b), the shield assembly of 6MeV electron linear accelerator of the present invention comprises target alpha ray shield, pipe alpha ray shield, afterbody shielding, X ray exit curtain and power source entry mask.
In the present invention, first, cover card based on 3-dimensional dose and calculate the 3-dimensional dose distribution of 6MeV electron linear accelerator X ray in shield, then, optimize the thickness of the various piece of accelerator shielding according to the 3-dimensional dose distribution calculated.
As shown in Fig. 3 ~ Fig. 5, the structure of target alpha ray shield is cylindrical, for the X ray that shielded target produces.Specifically, the profile of target alpha ray shield be cylindrical and the front end of 6MeV electron linear accelerator (namely, one end being configured with target of 6MeV electron linear accelerator) can configure therein, in addition, the loose piece (that is, the radiation exit seam loose piece shown in Fig. 4) of the X ray exit slit with the X ray outgoing made from accelerator is housed in the inside of target alpha ray shield.In addition, according to the difference shielding the material used, the thickness of shielding is different.
In addition, about the material of target alpha ray shield, when shielding material is tungsten, axis direction shielding thickness is more than or equal to 160mm, vertical axis direction shielding thickness is more than or equal to 140mm, relative axis direction miter angle shielding thickness is more than or equal to 170mm, herein and following said axis direction all refer to the axis direction of the cylinder forming target alpha ray shield.
In addition, when shielding material is plumbous, axis direction shielding thickness is more than or equal to 250mm, and vertical axis direction shielding thickness is more than or equal to 214mm, and relative axis direction miter angle shielding thickness is more than or equal to 255mm.
In addition, by being equipped with loose piece structure example radiation exit seam as shown in Figure 4 loose piece in the inside of target alpha ray shield, thus the change of the width of X ray exit slit can be realized in the mode by changing loose piece.
In addition, the structure of pipe alpha ray shield is cylindrical and the accelerating tube of accelerator can configure therein, for shielding the partial x-ray of X ray and the target generation produced in accelerating tube.And then pipe alpha ray shield comprises the accelerating tube first half section configured that to connect with target alpha ray shield and shields, shields the accelerating tube second half section that configures of connecting shield and shield the chimeric afterbody configured with the accelerating tube second half section and shield with accelerating tube first half section.X ray exit curtain, target alpha ray shield and pipe alpha ray shield are configured to entirety successively, 6MeV electron linear accelerator can be configured in the space surrounded by them.
The 3-dimensional dose distribution results of blocking and calculating is covered based on 3-dimensional dose according to above-mentioned, accelerating tube first half section is shielded be vertical axis direction thickness to be more than or equal to the tungsten shielding of 84mm or vertical axis direction thickness is more than or equal to the lead shield of 120mm, the shielding of accelerating tube second half section is the lead shield that vertical axis direction thickness is more than or equal to 100mm, and afterbody shielding is that thickness is more than or equal to the tungsten shielding of 130mm or thickness is more than or equal to the lead shield of 180mm.
In addition, X ray exit curtain main body is lead material, for shielding the X ray of accelerator X ray outlet scattering.The horizontal section of agent structure is trapezoidal, and bottom width is for being more than or equal to 75mm, and top width is for being more than or equal to 35mm, and length is greater than 120mm, and, exit opening size 7mm more than larger than above-mentioned X ray exit slit.
In addition, power source entry mask main body is lead material, for shielding the X ray of direct projection from power source entrance and scattering.Power source entry mask is arranged on the position corresponding with power source of pipe alpha ray shield, and its side is the lead that thickness is more than or equal to 15mm, that is, except the opening of necessity, four sides are all the lead that thickness is more than or equal to 15mm, and the gross thickness of the lead at top is more than or equal to 40mm.In addition, conveniently install and reach better shield effectiveness, as shown in Figure 4, the shielding at top is divided into three layers by the design feature according to power source, ground floor is close to the opening for power source being incorporated into its inside of pipe alpha ray shield, the second layer determines position as required, and third layer is power source entrance labyrinth.
As seen in figures 3-5, the shielding of X ray exit curtain, target alpha ray shield, power source entry mask, pipe alpha ray shield and afterbody is configured to entirety successively, 6MeV electron linear accelerator can be configured in the space surrounded by them, thus shield the X ray from 6MeV electron linear accelerator well.
As mentioned above, according to the present application, accelerator body shielding construction is optimized, and avoids the situation that shadow shield is too partially thick or partially thin; The use of loose piece in accelerator shielding structure, facilitates accelerator radiation exit to stitch wide change, avoids the replacing of whole accelerator shielding structure; The optimization of X ray exit curtain structure, shielding outlet scattered ray is on the impact of the radiation level of whole system effectively; The use of power source entry mask, strengthens the weak link of whole accelerator shielding, effectively can reduce, even cancel the application of extra additional mask.
In addition, the invention is not restricted to 6MeV electron linear accelerator, also may be used for the accelerator of other energy or other types, as long as Monte Carlo method can be utilized to obtain the 3-dimensional dose distribution of accelerator X ray in shield, just to apply the method for the invention, and corresponding shield assembly can be obtained.
Above the structure of the shield assembly of 6MeV electron linear accelerator and the concrete data of each several part are illustrated, but, be not limited to this, the shielding thickness of each several part of shield assembly can be set as required.In addition, the shape of each several part of shield assembly and material are also not limited to shape discussed above, as long as can meet the requirement shielded X ray, also can be other shape and other materials.
Claims (11)
1. a shield assembly for electron linear accelerator, is characterized in that,
Possess: target alpha ray shield, for the X ray that the target shielding described accelerator produces, profile is that the front end of cylindrical and described accelerator can configure therein, and, the loose piece of the X ray exit slit with the X ray outgoing made from described accelerator is housed in inside.
2. the shield assembly of electron linear accelerator as claimed in claim 1, is characterized in that also possessing:
Pipe alpha ray shield, for shielding the partial x-ray that the X ray that produces in the accelerating tube of described accelerator and target produce, profile is that the accelerating tube of cylindrical and described accelerator can configure therein;
X ray exit curtain, is configured in the front end of described target alpha ray shield, has the exit opening larger than described X ray exit slit; And
Power source entry mask, is arranged on the position corresponding with power source of described pipe alpha ray shield, for shielding the X ray of direct projection from power source entrance and scattering,
Described X ray exit curtain, described target alpha ray shield and described pipe alpha ray shield are configured to entirety successively, described electron linear accelerator can be configured in the space surrounded by them.
3. the shield assembly of electron linear accelerator as claimed in claim 1 or 2, is characterized in that,
Described loose piece is arranged on described target alpha ray shield inside in the mode that can dismantle.
4. the shield assembly of electron linear accelerator as claimed in claim 3, is characterized in that,
Described pipe alpha ray shield comprises: accelerating tube first half section shields, and connects configure with described target alpha ray shield; The accelerating tube second half section shields, and shields to connect to configure with described accelerating tube first half section; Afterbody shields, and shields chimeric configuration with the described accelerating tube second half section.
5. the shield assembly of electron linear accelerator as claimed in claim 4, is characterized in that,
The material of described target alpha ray shield is tungsten, and its axis direction shielding thickness is more than or equal to 160mm, and vertical axis direction shielding thickness is more than or equal to 140mm, and relative axis direction miter angle shielding thickness is more than or equal to 170mm.
6. the shield assembly of electron linear accelerator as claimed in claim 4, is characterized in that,
The material of described target alpha ray shield is plumbous, and its axis direction shielding thickness is more than or equal to 250mm, and vertical axis direction shielding thickness is more than or equal to 214mm, and relative axis direction miter angle shielding thickness is more than or equal to 255mm.
7. the shield assembly of the electron linear accelerator as described in any one of claim 4 ~ 6, is characterized in that,
The shielding of described accelerating tube first half section is the lead shield that vertical axis direction thickness is more than or equal to the tungsten shielding of 84mm or vertical axis direction thickness and is more than or equal to 120mm,
Described accelerating tube second half section shielding is the lead shield that vertical axis direction thickness is more than or equal to 100mm,
The shielding of described afterbody is the lead shield that thickness is more than or equal to the tungsten shielding of 130mm or thickness and is more than or equal to 180mm.
8. the shield assembly of the electron linear accelerator as described in any one of claim 4 ~ 6, is characterized in that,
The material of described X ray exit curtain is plumbous, and its agent structure cross section is trapezoidal, and bottom width is more than or equal to 75mm, and top is more than or equal to 35mm, and length is more than or equal to 120mm,
Described exit opening 7mm more than larger than described X ray exit slit.
9. the shield assembly of the electron linear accelerator as described in any one of claim 4 ~ 6, is characterized in that,
The material of described power source entry mask is plumbous, and the thickness of side is more than or equal to 15mm, and top gross thickness is more than or equal to 40mm.
10. a screen method for electron linear accelerator X ray, is characterized in that, possesses:
Obtain the step of the 3-dimensional dose distribution of X ray;
3-dimensional dose according to obtained X ray distributes, and obtains the step of the gauge of each shield member; And
There is in the configuration of the relevant position of electron linear accelerator the step of the shield member of described gauge.
The screen method of 11. electron linear accelerator X ray as claimed in claim 10, is characterized in that,
Monte Carlo method is used in the step of 3-dimensional dose distribution obtaining X ray.
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| CN201410785700.6A CN104505135A (en) | 2014-12-18 | 2014-12-18 | Shielding device and method of electron linear accelerator |
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| CN201410785700.6A CN104505135A (en) | 2014-12-18 | 2014-12-18 | Shielding device and method of electron linear accelerator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448371A (en) * | 2015-11-20 | 2016-03-30 | 中国电子科技集团公司第四十八研究所 | High voltage protection and ray shield system of electrostatic field accelerated high energy ion implantation machine |
| CN107293342A (en) * | 2016-04-12 | 2017-10-24 | 瓦里安医疗系统公司 | The shielding construction of linear accelerator |
| CN110708854A (en) * | 2019-10-17 | 2020-01-17 | 浙江中烟工业有限责任公司 | Shielding body structure of electron curtain accelerator |
| CN111189863A (en) * | 2020-01-10 | 2020-05-22 | 中国原子能科学研究院 | X-ray flaw detector |
| CN113543615A (en) * | 2021-06-29 | 2021-10-22 | 中国科学院长春光学精密机械与物理研究所 | Irradiation protection method for space electronic equipment |
| CN115985547A (en) * | 2023-01-19 | 2023-04-18 | 中核第四研究设计工程有限公司 | Shielding body for vehicle-mounted irradiation sterilization |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147967A (en) * | 1995-07-20 | 1997-04-23 | 西门子医疗系统公司 | Apparatus and method for delivering radiation to object and displaying delivered radiation |
| US6580084B1 (en) * | 1999-09-14 | 2003-06-17 | Hitachi, Ltd. | Accelerator system |
| CN2567569Y (en) * | 2002-09-23 | 2003-08-20 | 清华大学 | Gamma ray radiation device for container detection system |
| CN2935710Y (en) * | 2006-07-27 | 2007-08-15 | 山东新华医疗器械股份有限公司 | Double-line straight beam medical electron linear accelerator |
| CN101530005A (en) * | 2006-10-28 | 2009-09-09 | 史密斯海曼有限公司 | Lead shielding for a betatron |
| US20090289194A1 (en) * | 2008-05-20 | 2009-11-26 | Hitachi, Ltd. | Particle beam therapy system |
| CN103209535A (en) * | 2012-01-11 | 2013-07-17 | 西门子公司 | X-ray source |
| CN103728324A (en) * | 2013-12-18 | 2014-04-16 | 中国原子能科学研究院 | Nondestructive detection device for high-energy X-ray of nuclear fuel assembly |
| CN204884593U (en) * | 2014-12-18 | 2015-12-16 | 清华大学 | Electron linear accelerator's shield assembly |
-
2014
- 2014-12-18 CN CN201410785700.6A patent/CN104505135A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147967A (en) * | 1995-07-20 | 1997-04-23 | 西门子医疗系统公司 | Apparatus and method for delivering radiation to object and displaying delivered radiation |
| US6580084B1 (en) * | 1999-09-14 | 2003-06-17 | Hitachi, Ltd. | Accelerator system |
| CN2567569Y (en) * | 2002-09-23 | 2003-08-20 | 清华大学 | Gamma ray radiation device for container detection system |
| CN2935710Y (en) * | 2006-07-27 | 2007-08-15 | 山东新华医疗器械股份有限公司 | Double-line straight beam medical electron linear accelerator |
| CN101530005A (en) * | 2006-10-28 | 2009-09-09 | 史密斯海曼有限公司 | Lead shielding for a betatron |
| US20090289194A1 (en) * | 2008-05-20 | 2009-11-26 | Hitachi, Ltd. | Particle beam therapy system |
| CN103209535A (en) * | 2012-01-11 | 2013-07-17 | 西门子公司 | X-ray source |
| CN103728324A (en) * | 2013-12-18 | 2014-04-16 | 中国原子能科学研究院 | Nondestructive detection device for high-energy X-ray of nuclear fuel assembly |
| CN204884593U (en) * | 2014-12-18 | 2015-12-16 | 清华大学 | Electron linear accelerator's shield assembly |
Non-Patent Citations (1)
| Title |
|---|
| 刘以思: "大型集装箱检测室的屏蔽设计", 《辐射防护》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448371A (en) * | 2015-11-20 | 2016-03-30 | 中国电子科技集团公司第四十八研究所 | High voltage protection and ray shield system of electrostatic field accelerated high energy ion implantation machine |
| CN107293342A (en) * | 2016-04-12 | 2017-10-24 | 瓦里安医疗系统公司 | The shielding construction of linear accelerator |
| CN110708854A (en) * | 2019-10-17 | 2020-01-17 | 浙江中烟工业有限责任公司 | Shielding body structure of electron curtain accelerator |
| CN110708854B (en) * | 2019-10-17 | 2022-03-08 | 浙江中烟工业有限责任公司 | Shielding body structure of electron curtain accelerator |
| CN111189863A (en) * | 2020-01-10 | 2020-05-22 | 中国原子能科学研究院 | X-ray flaw detector |
| CN113543615A (en) * | 2021-06-29 | 2021-10-22 | 中国科学院长春光学精密机械与物理研究所 | Irradiation protection method for space electronic equipment |
| CN113543615B (en) * | 2021-06-29 | 2022-11-01 | 中国科学院长春光学精密机械与物理研究所 | Irradiation protection method for space electronic equipment |
| CN115985547A (en) * | 2023-01-19 | 2023-04-18 | 中核第四研究设计工程有限公司 | Shielding body for vehicle-mounted irradiation sterilization |
| CN115985547B (en) * | 2023-01-19 | 2023-11-07 | 中核第四研究设计工程有限公司 | Shielding body for vehicle-mounted irradiation sterilization |
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Application publication date: 20150408 |