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The electromagnetic properties of plasma produced by hypervelocity impact
Zhang QM; Gong LF; Ma YF(马月芬); Long RR; Gong ZZ
Source PublicationPHYSICS OF PLASMAS
AbstractThe change of electron density in moving plasma in this paper is empirically determined according to multiple ground-based experimental results and the assumption of the Maxwell distribution. Moreover, the equation of the magnetic field intensity, dominated by the current due to the collective electron movement during the expansion, is presented on the basis of the Biot-Savart law, and its relationship with time and space is subsequently depicted. In addition, hypervelocity impact experiments on a 2AL12 target have been carried out using a two-stage light gas gun to accelerate a 2AL12 projectile of 6.4mm to 6.2 km/s. Spiral coils are designed to measure the intensity of the electromagnetic field induced by this impact. The experimental results show that the magnetic field strength is an alternate pulse maintaining nearly 1ms and its maximum is close to 15 mu T, which is strong enough to interfere with the communication circuit and chip in spacecrafts. Lastly, numerical simulation of the magnetic field intensity using this experimental parameter reveals that the intensity in our estimation from our theory tends to be well consistent with the experimental data in the first peak of the pulse signal. Published by AIP Publishing.
Indexed BySCI ; EI
WOS IDWOS:000426584700064
WOS Research AreaPhysics, Fluids & Plasmas
WOS SubjectPhysics
Funding OrganizationNational Natural Science Foundation of China [11521062, 11221202] ; National Basic Research Program of China [2010CB731600]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
3.Beijing Inst Spacecraft Environm Engn, Natl Key Lab Sci & Technol Reliabil & Environm En, Beijing 100094, Peoples R China
Recommended Citation
GB/T 7714
Zhang QM,Gong LF,Ma YF,et al. The electromagnetic properties of plasma produced by hypervelocity impact[J]. PHYSICS OF PLASMAS,2018,25(2):22906.
APA Zhang QM,Gong LF,马月芬,Long RR,&Gong ZZ.(2018).The electromagnetic properties of plasma produced by hypervelocity impact.PHYSICS OF PLASMAS,25(2),22906.
MLA Zhang QM,et al."The electromagnetic properties of plasma produced by hypervelocity impact".PHYSICS OF PLASMAS 25.2(2018):22906.
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