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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 58, Iss. 6 — Jun. 1, 1968
  • pp: 843–846

Study of the X Rays Produced by a Vacuum Spark


JOSA, Vol. 58, Issue 6, pp. 843-846 (1968)

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The results of experiments on the x rays emitted by an energetic vacuum spark are presented. X-ray spectroscopic studies show, in addition to the characteristic x-ray lines of the electrode metal, lines originating from very high stages of ionization of the element. In particular, lines of the 1s2-1snp sequence in the helium-like spectra Ti XXI through Ni XXVII, and the 1s-2p transition in Fe XXVI, were observed. Pinhole photography and time-resolved studies of the total x-ray emission indicate that these highly ionized species originate in a small, hot region between the two electrodes, which is produced by a pinch in a plasma of evaporated anode metal.

LEONARD COHEN, URI FELDMAN, MARVIN SWARTZ, and J. H. UNDERWOOD, "Study of the X Rays Produced by a Vacuum Spark," J. Opt. Soc. Am. 58, 843-846 (1968)

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  1. U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
  2. U. Feldman, L. Cohen, and M. Swartz, J. Opt. Soc. Am. 57, 535 (1967).
  3. U. Feldman, L. Cohen, and M. Swartz, Astrophys. J. 148, 585 (1967).
  4. U. Feldman and L. Cohen, Astrophys. J. 149, 265 (1967).
  5. S. K. Händel, Brit. J. Appl. Phys. 14, 181 (1963).
  6. S. K. Händel, and J. M. Berg, Arkiv Fysik 31, 1 (1965). 843
  7. P. O. Schörling, Arkiv Fysik 21, 371 (1961).
  8. P. O. Schörling, Arkiv Fysik 19, 47 (1961).
  9. W. M. Neupert, W. Gates, M. Swartz, and R. Young, Astrophys. J. 149, L49 (1967).
  10. L. N. Khudyakova, E. K. Gutnikova, and L. V. Tarasova, Soviet Phys.-Tech. Phys. 9, 1572 (1965).
  11. T. N. Lie (private communication) has used a streak camera to photograph a similar spark in visible light. His observations confirm the existence of a multiple pinch effect.

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