The double photoionization of HBr molecules, by synchrotron radiation in the energy range between 25 and 55 eV, has been studied in a mass spectrometric experiment. The HBr21 and Br21 product ions have been detected by a photoelectron-photoion-coincidence technique, while the H11Br1 formation, which follows the double ionization of HBr, has been studied by photoelectron-photoion-photoion-coincidence technique. HBr21 ions are produced with a threshold of 32.460.4 eV, while the dissociative channel leading to H11Br1, shows a threshold around 33 eV. The production of H1Br21 occurs with a threshold of 40.260.4 eV. These results appear to be in a fairly good agreement with earlier nonrelativistic calculations of potential energy curves and also with values indirectly obtained from experimental Auger spectra.
Mass spectrometric study of double photoionization of HBr molecules / Michele, Alagia; M., Boustini; Brunetto G., Brunetti; Pietro, Candori; Stefano, Falcinelli; Robert, Richter; Stranges, Stefano; Franco, Vecchiocattivi. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - STAMPA. - 117:3(2002), pp. 1098-1102. [10.1063/1.1485066]
Mass spectrometric study of double photoionization of HBr molecules
STRANGES, Stefano;
2002
Abstract
The double photoionization of HBr molecules, by synchrotron radiation in the energy range between 25 and 55 eV, has been studied in a mass spectrometric experiment. The HBr21 and Br21 product ions have been detected by a photoelectron-photoion-coincidence technique, while the H11Br1 formation, which follows the double ionization of HBr, has been studied by photoelectron-photoion-photoion-coincidence technique. HBr21 ions are produced with a threshold of 32.460.4 eV, while the dissociative channel leading to H11Br1, shows a threshold around 33 eV. The production of H1Br21 occurs with a threshold of 40.260.4 eV. These results appear to be in a fairly good agreement with earlier nonrelativistic calculations of potential energy curves and also with values indirectly obtained from experimental Auger spectra.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
