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Charge-state distribution and energy loss of 3.2-MeV oxygen ions in laser plasma produced from solid hydrogen

Published online by Cambridge University Press:  12 February 2003

M. KOJIMA ,
M. MITOMO ,
T. SASAKI ,
J. HASEGAWA  and
M. OGAWA
M. KOJIMA
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
M. MITOMO
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
T. SASAKI
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
J. HASEGAWA
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
M. OGAWA
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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Abstract

The charge-state distribution and the energy loss of oxygen ions in a laser-produced hydrogen plasma have been investigated experimentally. The plasma target had a maximum electron density of 5 × 1018 cm−3 and a maximum electron temperature of 13 eV. The mean charge state of the oxygen ions in the hydrogen plasma was measured to be 5.1, which was considerably higher than that in hydrogen gas. The energy loss of oxygen ions in the plasma of a density less than 1 × 1018 cm−3 in the plasma showed a large enhancement compared with that in hydrogen gas. However, the energy loss in the plasma of a density above 1 × 1018 cm−3 showed no enhancement.

Keywords

Charge-state distributionEnergy lossLaser-produced hydrogen plasma
Type
Research Article
Information
Laser and Particle Beams , Volume 20 , Issue 3 , July 2002 , pp. 475 - 478
Copyright
© 2002 Cambridge University Press

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