Effect of gold on keV x-ray emission yield from laser produced plasma of gold-copper mix-Z targets

Journal Article · Tue Aug 01 00:00:00 EDT 2006 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2234559· OSTI ID:20879980

Arora, V; Chakera, J A; Naik, P A; Kumbhare, S R; Gupta, P D; Gupta, N K ^[1]

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1. Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013 (India)

The effect of gold on keV x-ray emission from gold-copper (Au-Cu) mix-Z plasma has been experimentally studied. The intensity of the copper L-shell line radiation ({lambda}{approx}7.8-10.9 A) as well as the integrated keV x-ray yield were observed to decrease sharply with increasing atomic fraction of gold in the mix-Z target. The decrease was observed to be by a factor of {approx}2.1 for 0.12 atomic fraction of gold in the Au-Cu mix-Z target with respect to the pure copper target. The results can be explained from physical consideration of the high value of free-bound opacity of gold in the spectral region of the L-shell emission of copper ions and downconversion of the absorbed keV line radiation.

• OSTI ID: 20879980
• Journal Information: Journal of Applied Physics, Vol. 100, Issue 3; Other Information: DOI: 10.1063/1.2234559; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COPPER
COPPER IONS
EMISSION
GOLD
KEV RANGE
L SHELL
LASER TARGETS
LASER-PRODUCED PLASMA
LASERS
OPACITY
X RADIATION