CN204789614U - Plasma's momentum measuring device - Google Patents
Plasma's momentum measuring device Download PDFInfo
- Publication number
- CN204789614U CN204789614U CN201520504912.2U CN201520504912U CN204789614U CN 204789614 U CN204789614 U CN 204789614U CN 201520504912 U CN201520504912 U CN 201520504912U CN 204789614 U CN204789614 U CN 204789614U
- Authority
- CN
- China
- Prior art keywords
- light source
- target
- light beam
- plasma
- momentum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model relates to a plasma's momentum measuring device, including first light source, secondary light source, simple pendulum, two photoelectrons, oscillograph, first light source and secondary light source send criss -cross detection light beam, through jeting into respectively behind the intersect two photoelectrons, two photoelectrons respectively with the oscillograph is connected, the simple pendulum includes the target and connects the filament of target below, can sweep during the filament swing criss -cross detection light beam. The utility model has the advantages of simple structure, measurement accuracy height, light path are adjusted simply.
Description
Technical field
The utility model relates to plasma measurement field, particularly relates to a kind of momentum testing device of plasma.
Background technology
Light laser and target produce the plasma of supersonic velocity when interacting, according to momentum conservation, produce an acting force in the opposite direction of plasma jet, this acting force can as a kind of propelling source newly, the ultimate principle of laser plasma propelling that Here it is.Because laser plasma Push Technology is advancing the advantage in specific impulse, launch cost, environmental protection, safety etc., obtains in the past several years and developing rapidly.The momentum of plasma generation is the problem first will considered during laser plasma advances, the momentum produced due to laser plasma is very little, and the action time of plasma and object is very short, therefore the speed how measured in the momentum, particularly momentum of this plasma is a problem first needing to solve.For the momentum survey of laser plasma, in actual experiment, utilizing principle of conservation of momentum realize, according to momentum conservation, is the momentum of plasma by the momentum of the momentum of the object of laser ablation and target, for target momentum, key is the speed obtaining target.Generally adopt single pendulum method to measure at present experimentally, the method is that the target of laser ablation is hung into a single pendulum, and the angle swung after ablation by measurement target or amplitude obtain the speed of target.Because the method is the measuring method that a kind of structure is simple, easy to operate, measuring accuracy is relatively high, and adopted by most research group, but the method is indirect inspection, introduces error larger.In the past several years, we have proposed a kind of parallel double detecting light beam measuring method, parallel double detecting light beam measuring method eliminates the width of target own with detection light spot size to the impact of velocity survey, but because two bundle detecting light beams are parallel across target surface, by the restriction of the distance size between two light beams, measuring accuracy is relatively not high, and on optical path adjusting relative difficulty.
As can be seen here, the momentum survey device of above-mentioned existing plasma, in structure, method and use, obviously still has inconvenience and defect, and is urgently further improved.How to found the momentum survey device of the plasma that a kind of measuring accuracy is high, optical path adjusting is simply new, one of current important research and development problem of real genus.
Utility model content
The technical matters that the utility model solves is to provide a kind of momentum survey device with the plasma of two bundles intersection detecting light beams, makes it have the advantages such as structure is simple, measuring accuracy is high, optical path adjusting is simple, thus overcomes the deficiencies in the prior art.
For solving the problems of the technologies described above, the momentum survey device of a kind of plasma of the utility model, comprise the first light source, secondary light source, single pendulum, two photoelectric tubes, oscillographs, described first light source and secondary light source send the detecting light beam of intersection, by injecting described two photoelectric tubes behind point of crossing respectively, described two photoelectric tubes are connected with described oscillograph respectively, and described single pendulum comprises target and is connected to the filament below described target, can skim over the detecting light beam of described intersection when described filament swings.
Improve as one of the present utility model, be provided with semi-transparent semi-reflecting prism between described light source and single pendulum, the transmitted light that described first light source is obtained by described semi-transparent semi-reflecting prism and secondary light source form the detecting light beam of described intersection by the reflected light that described semi-transparent semi-reflecting prism obtains.
As further improvement, the target in described single pendulum is bifilar suspension target.
As further improvement, described light source is He-Ne radiant.
After adopting such design, the utility model at least has the following advantages:
Compared with the experimental provision restrainting parallel detecting light beam with two, the experimental provision of the two bundle intersection detecting light beams that the utility model proposes can realize any adjustment of two bundle detecting light beam spacing, simple to operate, data are accurately complete, the restriction that measuring accuracy is high, measurement result is not regulated by detecting light beam spacing, the measurement of the laser plasma momentum that the speed that is applicable to is low, displacement is little.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Fig. 1 is structure and the light path schematic diagram of the momentum survey device of the utility model plasma.
Fig. 2 is the time interval of the target that collects of oscillograph by two bundle detecting light beams.
Embodiment
The object of this experimental provision is to provide a kind of speed and the momentum survey device that do not regulate restriction by detecting light beam spacing.
A kind of momentum survey device of plasma, comprise the first light source, secondary light source, single pendulum, two photoelectric tubes, oscillographs, described first light source and secondary light source send the detecting light beam of intersection, by injecting described two photoelectric tubes behind point of crossing respectively, described two photoelectric tubes are connected with described oscillograph respectively, described single pendulum comprises target and is connected to the filament below described target, can skim over the detecting light beam of described intersection when described filament swings.
Be provided with semi-transparent semi-reflecting prism between light source and single pendulum, the transmitted light that described first light source is obtained by described semi-transparent semi-reflecting prism and secondary light source form the detecting light beam of described intersection by the reflected light that described semi-transparent semi-reflecting prism obtains.Target in single pendulum is bifilar suspension target, and light source is He-Ne radiant.
Below an embodiment:
Refer to shown in Fig. 1, the utility model plasma momentum survey device, comprise the first He-Ne radiant 101 and the second He-Ne radiant 102, semi-transparent semi-reflecting prism 103, the single pendulum hanging with target 104 and filament 105, two photoelectric tubes 106, oscillographs 107.First He-Ne radiant 101 and the second He-Ne radiant 102 produce laser beam, described laser beam forms the first detecting light beam 108 and the second detecting light beam 109 of intersection after semi-transparent semi-reflecting prism 103, first detecting light beam 108 and the second detecting light beam 109 are as the filament 105 directive photoelectric tube 106 of detecting light beam under target 104, first detecting light beam 108 of directive photoelectric tube 106 and the second detecting light beam 109 are converted into electric signal through photoelectric tube 106, and then input oscillograph 107 shows.
Semi-transparent semi-reflecting prism 103 is for regulating intersecting of two bundle detecting light beams, target 104 gets up with bifilar suspension, target 104 connects filament 105 below, form a two-wire single pendulum, two-wire single pendulum can well solve the problem that swings of target 104, photoelectric tube 106 is electric signal for transforming light signal, and oscillograph 107 records filament 105 by time interval during two bundle detecting light beams.By the Reflective regulation of semi-transparent semi-reflecting prism 103, be easy to the adjustment of the distance realized between the first detecting light beam 108 and the second detecting light beam 109, for parallel detecting light beam, due to the restriction of mechanical adjustment, distance between them is generally in millimeter magnitude, be difficult to accomplish below millimeter, and for the first detecting light beam 108 and the second detecting light beam 109 intersected, their spacing is different with the difference of propagation distance.
Plasma momentum survey device skims over time of two bundle detecting light beams according to filament 105 and two distances that bundle detecting light beams are skimming over part obtain the flying speed of target 104, is then obtained the momentum of laser plasma by the quality of target 104.
Concrete measuring process is: when filament 105 skims over the first detecting light beam 108 and the second detecting light beam 109, oscillograph 107 can present corresponding two signals, interval between two signals is exactly filament 105 by the time of the first detecting light beam 108 and the second detecting light beam 109, as shown in Figure 2.The ratio in the distance between the first detecting light beam 108 and the second detecting light beam 109 and the time interval on oscillograph 107 is exactly the swing speed of target 104, and the product of the quality of this speed and target 104 is exactly target 104 momentum.According to principle of conservation of momentum, this target 104 momentum is exactly the momentum that laser plasma produces.
He-Ne radiant in the utility model is only as light source, the light beam that a branch of continuous print, spot diameter are very little is provided, other can provide the light source of light beam also can use, required to measure the speed obtained should be the speed of target 104 in equilibrium position, the speed of filament 105 when namely target 104 drops to minimum point.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (4)
1. the momentum survey device of a plasma, it is characterized in that comprising the first light source, secondary light source, single pendulum, two photoelectric tubes, oscillographs, described first light source and secondary light source send the detecting light beam of intersection, by injecting described two photoelectric tubes behind point of crossing respectively, described two photoelectric tubes are connected with described oscillograph respectively, described single pendulum comprises target and is connected to the filament below described target, can skim over the detecting light beam of described intersection when described filament swings.
2. the momentum survey device of plasma according to claim 1, it is characterized in that being provided with semi-transparent semi-reflecting prism between described light source and single pendulum, the transmitted light that described first light source is obtained by described semi-transparent semi-reflecting prism and secondary light source form the detecting light beam of described intersection by the reflected light that described semi-transparent semi-reflecting prism obtains.
3. the momentum survey device of plasma according to claim 1 and 2, is characterized in that the target in described single pendulum is bifilar suspension target.
4. the momentum survey device of plasma according to claim 1 and 2, is characterized in that described light source is He-Ne radiant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504912.2U CN204789614U (en) | 2015-07-13 | 2015-07-13 | Plasma's momentum measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504912.2U CN204789614U (en) | 2015-07-13 | 2015-07-13 | Plasma's momentum measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204789614U true CN204789614U (en) | 2015-11-18 |
Family
ID=54529631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520504912.2U Expired - Fee Related CN204789614U (en) | 2015-07-13 | 2015-07-13 | Plasma's momentum measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204789614U (en) |
-
2015
- 2015-07-13 CN CN201520504912.2U patent/CN204789614U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108132134A (en) | Aerodynamic derivative discrimination method and system based on wind tunnel free flight test | |
| CN102176003B (en) | Optimization design method for aerial survey parameter of airborne laser radar | |
| CN103983309B (en) | A kind of three-in-one photoelectric probe for impact and explosion experiment | |
| CN105735971B (en) | A kind of drilling depth detection system and its detection method based on elastic wave | |
| CN103217719B (en) | Method of advanced detection of breaking-loss wing coal seam of coal road based on single offset pair observation system | |
| CN106596125A (en) | Front anticollision test system and test method based on distance tests | |
| CN103954949B (en) | A kind of stealthy cunning jumps the multi-model oval Hough transform integration detection method of formula maneuvering target | |
| CN101825703A (en) | Improved pulsed laser distance measurement device and laser distance measurement method utilizing same | |
| CN106643838A (en) | Bumping position measuring system and method based on bidirectional detection of fiber ring | |
| CN206378299U (en) | Preceding anticollision test system based on distance test | |
| CN204789614U (en) | Plasma's momentum measuring device | |
| NO791554L (en) | PROCEDURES AND SYSTEM FOR CREATING INSERTITY, CONSTRUCTION, AND AERODYNAMIC DATA | |
| CN109520383A (en) | Body target echo analogy method based on matlab | |
| CN102236097B (en) | Two-path lateral Doppler speed measuring method for impact exciting calibration | |
| CN102721457A (en) | Ultrasonic speckle underwater steady-state vibration measuring method and measuring device | |
| CN204789613U (en) | Plasma's momentum testing arrangement | |
| CN108519494A (en) | A kind of multistage laser method for surveying explosive charge acceleration and speed | |
| CN205103273U (en) | Laser plasma's momentum measuring device | |
| CN201749190U (en) | Pulsed laser ranging device using continuous laser source | |
| CN205103272U (en) | Laser plasma momentum measuring device | |
| Landgrebe et al. | Technical notes: measurement of model helicopter rotor flow velocities with a laser Doppler velocimeter | |
| CN203929122U (en) | A kind of three-in-one photoelectric probe for impact and explosion experiment | |
| CN205450019U (en) | Laser that utilizes magnetic suspension impels target momentum measuring device | |
| CN108051095A (en) | The measuring system and method for single pulse laser energy | |
| CN102393523B (en) | Method for measuring distance by using picosecond pulse-based high-accuracy laser distance measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20151118 Termination date: 20160713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |