Local regions of high-pressure plasma in a vacuum spark
作者： C R Negus , N J Peacock
DOI: 10.1088/0022-3727/12/1/011
关键词:
摘要: The formation of local regions the high-temperature, high-pressure plasma, 'hot-spots', in a vacuum spark is studied using X-ray spectroscopy and holography. Measurements dimensions hot-spots, absolute flux radiation spectral composition emission, have been analysed to give order-of-magnitude values for electron density, temperature plasma lifetime. It appears that pressure >or approximately=107 atm hot spots requires intense heating rates more commonly associated with focused laser beams, i.e. approximately=1015 W cm-3. probable beams are responsible heating. Possible mechanisms concentrating energy deposition localised discussed.
harvard.edu
sci-hub.se 参考文章(23)
Tong Nyong Lee, HIGH-DENSITY IONIZATION WITH AN INTENSE LINEAR FOCUS DISCHARGE Annals of the New York Academy of Sciences. ,vol. 251, pp. 112- 125 ,(1975) , 10.1111/J.1749-6632.1975.TB00086.X
R. U. Datla, Hans R. Griem, Stark profile measurements on Lyman series lines of Al xiii Physics of Fluids. ,vol. 21, pp. 505- 508 ,(1978) , 10.1063/1.862225
Leonard Cohen, Uri Feldman, Marvin Swartz, J. H. Underwood, Study of the X Rays Produced by a Vacuum Spark Journal of the Optical Society of America. ,vol. 58, pp. 843- 846 ,(1968) , 10.1364/JOSA.58.000843
R S Pease, Equilibrium Characteristics of a Pinched Gas Discharge Cooled by Bremsstrahlung Radiation Proceedings of the Physical Society. Section B. ,vol. 70, pp. 11- 23 ,(1957) , 10.1088/0370-1301/70/1/304
H. P. Summers, The recombination and level populations of ions. II. Resolution of angular momentum states. Monthly Notices of the Royal Astronomical Society. ,vol. 178, pp. 101- 122 ,(1977) , 10.1093/MNRAS/178.2.101
J. W. Shearer, Contraction of Z pinches actuated by radiation losses Physics of Fluids. ,vol. 19, pp. 1426- 1428 ,(1976) , 10.1063/1.861627
T. Holstein, Imprisonment of Resonance Radiation in Gases Physical Review. ,vol. 72, pp. 1212- 1233 ,(1947) , 10.1103/PHYSREV.72.1212
W. A. Cilliers, R. U. Datla, Hans R. Griem, Spectroscopic measurements on vacuum spark plasmas Physical Review A. ,vol. 12, pp. 1408- 1418 ,(1975) , 10.1103/PHYSREVA.12.1408
W Schuurman, C Bobeldijk, R F de Vries, Stability of the screw pinch Plasma Physics. ,vol. 11, pp. 495- 506 ,(1969) , 10.1088/0032-1028/11/6/003
D. Mosher, S. J. Stephanakis, I. M. Vitkovitsky, C. M. Dozier, L. S. Levine, D. J. Nagel, X radiation from high-energy density exploded wire discharges Applied Physics Letters. ,vol. 23, pp. 429- 430 ,(1973) , 10.1063/1.1654946