CN205015298U - Molecule nuclear separation measuring device - Google Patents
Molecule nuclear separation measuring device Download PDFInfo
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- CN205015298U CN205015298U CN201520708593.7U CN201520708593U CN205015298U CN 205015298 U CN205015298 U CN 205015298U CN 201520708593 U CN201520708593 U CN 201520708593U CN 205015298 U CN205015298 U CN 205015298U
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Abstract
The utility model provides a molecule nuclear separation measuring device, molecule nuclear separation measuring device include femto second laser ware, beam splitter, time -delay device, a focusing lens, the 2nd focusing lens, the first mirror that is all -trans, second be all -trans mirror, third be all -trans mirror, gas cylinder, air duct, nozzle, vacuum cavity, vacuum pump, X ray spectrum appearance, X ray camera, femto second laser, oriented light beam, survey the light beam, advance the chamber window, gas jet, higher harmonic and aluminium membrane, the time -delay device is connected with first data line, first data line is connected with the computer, the computer is connected with the second data line, second data line and X ray camera connection.
Description
Technical field
The utility model belongs to molecular core distance measurement equipment technical field, particularly relates to a kind of device of molecular core distance measurement.
Background technology
In scientific domain, the great discovery of physical field or utility model all can play material impact to scientific-technical progress, and change the life style of the mankind.Eighties of last century, the utility model of laser is one of greatest scientific and technological achievement of the mankind, and it is not only ancient optics and is filled with new vigor, and brings revolutionary variation for modern science and technology.Laser technology has penetrated into numerous research field such as physics, chemistry, biology, information, medical science, material, and has given play to irreplaceable effect, also creates such as Materialbearbeitung mit Laserlicht, laser chemistry, laser biology, the emerging cross discipline such as optical communication.
In addition, present femtosecond laser technology makes laser power density meet or exceed intramolecular electric field intensity, so the basic assumption of perturbation theory is no longer applicable, and some new high fields theoretical by grow up for explain high field Middle molecule ionization, dissociate and the behavior such as higher hamonic wave.Past to high field ionization, dissociate and the atomic system such as research more pass inert gas injection of the phenomenon such as higher hamonic wave, and now also significant progress is achieved to the high field phenomenal research of molecule.For molecule, except ionization, dissociate and except the high field phenomenon such as higher hamonic wave, also there is the endemisms such as the rotational alignment of molecule.Therefore, femtosecond laser technology can be used for the ultra-fast dynamics process of electronics and core in molecular detection, and molecule higher hamonic wave phenomenon is research topic more popular recently, and much new phenomenon is constantly found and is applied to modern science and technology.The research of molecule higher hamonic wave, enriches people to the understanding of Strong-field physics and has deepened the understanding of people to microworld, additionally provide a kind of important means exploring microworld simultaneously.The device and method of the molecular core distance measurement that the utility model provides, has the features such as precision is high, analysis speed is fast, and the dimension for two central elements such as O2, CO2, C2H2 is received the nuclear separation of magnitude and to be measured and association area has opened up brand-new application prospect.
Utility model content
The utility model mainly solves the technical matters existing for above-mentioned prior art, a kind of device of molecular core distance measurement is provided, detecting light beam is undertaken acting on effusive flow after time delay and condenser lens converge by time-delay mechanism, for driving molecule to produce higher hamonic wave, higher hamonic wave is carried out spectral diffraction resolution by x-ray spectrometer and is carried out shooting record by X ray camera; Like this, by gathering and analyze the extreme value place of higher hamonic wave, thus the nuclear separation of testing molecule is parsed.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of device of molecular core distance measurement, and the device of described molecular core distance measurement comprises femto-second laser, beam splitter, time-delay mechanism, the first condenser lens, the second condenser lens, the first total reflective mirror, the second total reflective mirror, the 3rd total reflective mirror, gas cylinder, wireway, nozzle, vacuum chamber, vacuum pump, x-ray spectrometer, X ray camera, femtosecond laser, orientation light beam, detecting light beam, enters chamber window, gas jet, higher hamonic wave and aluminium film; Described time-delay mechanism is connected with the first data line, and described first data line is connected with computer, and described computer is connected with the second data line, and described second data line is connected with X ray camera.Testing sample molecule is set in described gas cylinder, described testing sample molecule forms gas jet by nozzle again via wireway, the femtosecond laser that described femto-second laser can be launched, described femtosecond laser is divided into orientation light beam and detecting light beam by beam splitter, described orientation light beam converges in sample gas jet flow by the first condenser lens, for the orientation positions in advance of testing molecule jet flow; Described detecting light beam is undertaken acting on effusive flow after time delay and the second condenser lens converge by time-delay mechanism, produces higher hamonic wave for driving molecule; Described aluminium film is for stopping remaining orientation light beam and detecting light beam, and only enter x-ray spectrometer through higher hamonic wave, described higher hamonic wave is carried out spectral diffraction resolution by x-ray spectrometer and carried out shooting record by X ray camera.
The beneficial effect that the utility model has: detecting light beam is undertaken acting on effusive flow after time delay and condenser lens converge by time-delay mechanism, for driving molecule to produce higher hamonic wave, higher hamonic wave is carried out spectral diffraction resolution by x-ray spectrometer and is carried out shooting record by X ray camera; Like this, by gathering and analyze the extreme value place of higher hamonic wave, thus the nuclear separation of testing molecule is parsed.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present utility model.
Fig. 2 is the device schematic diagram specifically implementing example.
Fig. 3 is the evolution with time figure of the higher hamonic wave that collects of the molecular orientation evolution with time figure that specifically implements to calculate in example and testing with change in orientation.
Fig. 4 is experimental measurements and the numerical fitting curve map of specifically implementing example.
In figure: 1, femto-second laser; 2, beam splitter; 3, time-delay mechanism; 4, the first condenser lens; 5, the second condenser lens; 6, the first total reflective mirror; 7, the second total reflective mirror; 8, the 3rd total reflective mirror; 9, gas cylinder; 10, wireway; 11, nozzle; 12, vacuum chamber; 13, vacuum pump; 14, x-ray spectrometer; 15, X ray camera; 16, femtosecond laser; 17, orientation light beam; 18, detecting light beam; 19, chamber window is entered; 20, gas jet; 21, higher hamonic wave; 22, aluminium film; 23, computer; 24, the first data line; 25, the second data line; 26, testing sample molecule.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of device of molecular core distance measurement, as shown in Fig. 1 ~ Fig. 2, the centre wavelength of the femtosecond laser that described femto-second laser exports is 790nm, repetition frequency is 1kHz, laser pulse width is 45fs, output single pulse energy is 2mJ; Described beam splitter is beam splitting energy Ratios is 1:3, and the energy of orientation light beam 17 is 0.5mJ; The energy of described detecting light beam is 1.5mJ; Described time-delay mechanism is placed in rectilinear translation platform by two the 790nm total reflective mirrors being mutually right angle and forms; The focal length of described first condenser lens is 800mm, and the focal length of described second condenser lens is 400mm; Described first total reflective mirror, the second total reflective mirror and the 3rd total reflective mirror are 790nm deielectric-coating total reflective mirrors; Described testing sample molecule is carbon dioxide molecule; The air guide copper pipe of described wireway to be internal diameter be 6mm; The gas nozzle of described nozzle to be perforate be 0.2mm; Described vacuum chamber is high vacuum cavity; Described vacuum pump can maintain the vacuum tightness of vacuum chamber 1 × 10
-3below Pa; Described x-ray spectrometer is homemade x-ray spectrometer, primarily of slit and flat field X ray grating composition; Described enter the quartz glass of chamber window to be thickness be 3mm.
Utilize said apparatus, we just can collect the higher hamonic wave spectrum of carbon dioxide molecule, as shown in the solid line in Fig. 3, are exactly the result that we extract 23 higher hamonic wave intensity time delays wherein.Dotted line in Fig. 3 is the evolution with time figure of molecular orientation, and we can find, when time delay is 21.1 psec, molecular orientation reaches maximal value, and higher hamonic wave intensity reaches minimum value, illustrates that this higher hamonic wave order interferes phase digit absorption to be put.Then, we extract the humorous intensity of wave of 19 ~ 37 higher hamonic waves when 21.1 psec, and carry out contrast normalization with humorous intensity of wave during No yield point, experimental measurements as shown by the bold lines in fig, wherein dotted line is that formula (1) according to above-mentioned measuring method carries out numerical fitting, we have attempted R=0.28nm, 0.25nm and 0.23nm respectively and have carried out numerical simulation.Can find, as R=0.23nm, experimental result and simulation curve reach higher degree of fitting, and this illustrates, the oxygen atom nuclear separation in carbon dioxide molecule is 0.23nm.Thus and thus, just can measure to obtain tieing up by two center interference phenomenons of molecule higher hamonic wave and receive the molecular core spacing of magnitude, be applicable to O
2, CO
2, C
2h
2nuclear separation Deng two central element is measured and association area.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, can also have many distortion.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all should think and belong to protection domain of the present utility model.
Claims (1)
1. a device for molecular core distance measurement, is characterized in that the device of described molecular core distance measurement comprises femto-second laser, beam splitter, time-delay mechanism, the first condenser lens, the second condenser lens, the first total reflective mirror, the second total reflective mirror, the 3rd total reflective mirror, gas cylinder, wireway, nozzle, vacuum chamber, vacuum pump, x-ray spectrometer, X ray camera, femtosecond laser, orientation light beam, detecting light beam, enters chamber window, gas jet, higher hamonic wave and aluminium film; Described time-delay mechanism is connected with the first data line, and described first data line is connected with computer, and described computer is connected with the second data line, and described second data line is connected with X ray camera; Arrange testing sample molecule in described gas cylinder, described testing sample molecule forms gas jet by nozzle again via wireway, the femtosecond laser that described femto-second laser can be launched, and described femtosecond laser is divided into orientation light beam and detecting light beam by beam splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520708593.7U CN205015298U (en) | 2015-09-14 | 2015-09-14 | Molecule nuclear separation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520708593.7U CN205015298U (en) | 2015-09-14 | 2015-09-14 | Molecule nuclear separation measuring device |
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| Publication Number | Publication Date |
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| CN205015298U true CN205015298U (en) | 2016-02-03 |
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| CN201520708593.7U Expired - Fee Related CN205015298U (en) | 2015-09-14 | 2015-09-14 | Molecule nuclear separation measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136828A (en) * | 2015-09-14 | 2015-12-09 | 温州大学 | Device and method for measuring molecular nuclear distance |
| CN110398345A (en) * | 2019-09-03 | 2019-11-01 | 中国工程物理研究院激光聚变研究中心 | Photovoltaic device single-shot time super fast response measurement system |
-
2015
- 2015-09-14 CN CN201520708593.7U patent/CN205015298U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136828A (en) * | 2015-09-14 | 2015-12-09 | 温州大学 | Device and method for measuring molecular nuclear distance |
| CN110398345A (en) * | 2019-09-03 | 2019-11-01 | 中国工程物理研究院激光聚变研究中心 | Photovoltaic device single-shot time super fast response measurement system |
| CN110398345B (en) * | 2019-09-03 | 2024-06-11 | 中国工程物理研究院激光聚变研究中心 | Single-shot ultrafast response process measurement system for photovoltaic device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20160914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |