Evidence of resonance absorption in laser-produced plasmas from the polarization and angular dependence of high-energy x-ray bremsstrahlung emission

Journal Article · Wed Feb 15 00:00:00 EST 1978 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.89993· OSTI ID:5239087

Luther-Davies, B

Measurements are reported of the polarization and angular dependence of the amplitude and ''temperature'' of high-energy bremsstrahlung emission from planar copper targets irradiated with 25-psec neodymium laser pulses at 5 +- 2 x 10/sup 14/ W/cm/sup 2/. A resonance in the emission is observed for p-polarized incident radiation at an angle of incidence of 25/sup 0/. The results indicate the presence of plasma density scale lengths of about 1 ..mu..m and 17% absorption due to the resonance absorption mechanism.

• Research Organization: Laser Physics Group, Department of Engineering Physics, Research School of Physical Sciences, The Australian National University, Canberra 2601 Australia
• OSTI ID: 5239087
• Journal Information: Appl. Phys. Lett.; (United States), Vol. 32:4
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
LASER-PRODUCED PLASMA
ENERGY ABSORPTION
ANGULAR DISTRIBUTION
BREMSSTRAHLUNG
COPPER
EMISSION SPECTRA
IRRADIATION
NEODYMIUM LASERS
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA WAVES
POLARIZATION
RESONANCE ABSORPTION
X-RAY SPECTRA
ABSORPTION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTS
LASERS
METALS
PLASMA
RADIATIONS
SOLID STATE LASERS
SPECTRA
TRANSITION ELEMENTS
700106* - Fusion Energy- Plasma Research- Plasma Production- (-1987)