Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Bright source of Kα and continuum X rays by heating Kr clusters using a femtosecond laser
AU - Issac, R.
AU - Wirthig, J.
AU - Brunetti, E.
AU - Vieux, G.
AU - Ersfeld, B.
AU - Jamison, S.P.
AU - Jones, D.
AU - Bingham, R.
AU - Clark, D.
AU - Jaroszynski, D.A.
PY - 2003
Y1 - 2003
N2 - X rays emitted from Kr clusters illuminated by a femtosecond laser have been observed over a wide spectral region from 3 keV to 15 keV. The measured spectra are characterized by a broad bremsstrahlung continuum and Kα, β lines at 12.66 keV and 14.1 keV. To the best of the authors' knowledge, this is the first observation of Kα, β emission from laser-heated Kr clusters. The bremsstrahlung continuum arising from collisions in the plasma implies a population of hot electrons consistent with a temperature of several kiloelectron volts. The absolute X-ray yield in the 3–15 keV region is found to be of the order of 107 photons per laser pulse. The plasma temperature, estimated from the continuum part of the spectrum as a function of laser intensity and X-ray yield as a function of laser pulse duration, are studied.
AB - X rays emitted from Kr clusters illuminated by a femtosecond laser have been observed over a wide spectral region from 3 keV to 15 keV. The measured spectra are characterized by a broad bremsstrahlung continuum and Kα, β lines at 12.66 keV and 14.1 keV. To the best of the authors' knowledge, this is the first observation of Kα, β emission from laser-heated Kr clusters. The bremsstrahlung continuum arising from collisions in the plasma implies a population of hot electrons consistent with a temperature of several kiloelectron volts. The absolute X-ray yield in the 3–15 keV region is found to be of the order of 107 photons per laser pulse. The plasma temperature, estimated from the continuum part of the spectrum as a function of laser intensity and X-ray yield as a function of laser pulse duration, are studied.
U2 - 10.1017/S0263034603214099
DO - 10.1017/S0263034603214099
M3 - Journal article
VL - 21
SP - 535
EP - 540
JO - Laser and Particle Beams
JF - Laser and Particle Beams
SN - 0263-0346
IS - 4
ER -