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Angular distribution of X-ray line radiation from laser-irradiated planar targets

Published online by Cambridge University Press:  18 January 2002

V. ARORA ,
J.A. CHAKERA ,
S.R. KUMBHARE ,
P.A. NAIK ,
N.K. GUPTA  and
P.D. GUPTA
V. ARORA
Affiliation:
Plasma Radiation Section, Centre for Advanced Technology, Indore, 452013, India
J.A. CHAKERA
Affiliation:
Plasma Radiation Section, Centre for Advanced Technology, Indore, 452013, India
S.R. KUMBHARE
Affiliation:
Plasma Radiation Section, Centre for Advanced Technology, Indore, 452013, India
P.A. NAIK
Affiliation:
Plasma Radiation Section, Centre for Advanced Technology, Indore, 452013, India
N.K. GUPTA
Affiliation:
High Pressure Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
P.D. GUPTA
Affiliation:
Plasma Radiation Section, Centre for Advanced Technology, Indore, 452013, India
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Abstract

A study of angular distribution of X-ray line radiation emitted from a laser-produced plasma is presented. Plasma was produced by irradiating a planar magnesium target using single laser pulses of 6 J, 4.5 ns (FWHM) from an Nd:glass laser system. Angular distribution of X-ray emission in the spectral range of 7–10 Å was recorded using a single X-ray crystal spectrograph. X-ray emission intensity for different resonance lines is observed to decrease up to an angle of ∼45° with respect to target normal, followed by a significant increase at higher angles. The observed departure of angular distribution from a monotonically decreasing behavior is broadly in agreement with the calculations of the escape factor of the radiation at different angles from a thick disk-shaped plasma using a spectroscopic code RATION.

Keywords

Angular distributionLaser produced plasmaX-ray crystal spectrograph
Type
Research Article
Information
Laser and Particle Beams , Volume 19 , Issue 2 , April 2001 , pp. 253 - 257
Copyright
© 2001 Cambridge University Press

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