TY - JOUR
T1 - Laser measurement of the photodetachment cross section of H- at the wavelength 1064 nm
AU - Vandevraye, Mickaël
AU - Babilotte, Philippe
AU - Drag, Cyril
AU - Blondel, Christophe
PY - 2014/7/11
Y1 - 2014/7/11
N2 - A method is described to measure photoexcitation cross sections, relying on the expected behavior of the signal in the saturated regime, when excitation is provided by a Gaussian light beam. The method is implemented on a negative ion beam, with a single-mode pulsed Nd:YAG laser, to make a laser measurement of the photodetachment cross section of H-, at the wavelength 1064 nm. This cross section is of importance both as a photodetachment cross section of the most elementary negative ion and as a key parameter for the production of fast neutral H0 or D0 atoms, by photodetachment of accelerated anions. The obtained value 4.5(6)×10-21m2 is greater than the one known from older measurements and most ab initio calculations.
AB - A method is described to measure photoexcitation cross sections, relying on the expected behavior of the signal in the saturated regime, when excitation is provided by a Gaussian light beam. The method is implemented on a negative ion beam, with a single-mode pulsed Nd:YAG laser, to make a laser measurement of the photodetachment cross section of H-, at the wavelength 1064 nm. This cross section is of importance both as a photodetachment cross section of the most elementary negative ion and as a key parameter for the production of fast neutral H0 or D0 atoms, by photodetachment of accelerated anions. The obtained value 4.5(6)×10-21m2 is greater than the one known from older measurements and most ab initio calculations.
U2 - 10.1103/PhysRevA.90.013411
DO - 10.1103/PhysRevA.90.013411
M3 - Article
AN - SCOPUS:84904347754
SN - 1050-2947
VL - 90
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 013411
ER -