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Titolo:
Fragment ion-photon coincidence study of dissociative ionization accompanying light emission by electron impact on acetylene
Autore:
Furuya, K; Maruyama, K; Koto, E; Matsuo, A; Ogawa, T;
Indirizzi:
Kyushu Univ, Dept Mol & Mat Sci, Fukuoka 8168580, Japan Kyushu Univ Fukuoka Japan 8168580 Mol & Mat Sci, Fukuoka 8168580, Japan Kyushu Univ, Dept Mol Sci & Technol, Fukuoka 8168580, Japan Kyushu Univ Fukuoka Japan 8168580 Sci & Technol, Fukuoka 8168580, Japan
Titolo Testata:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
fascicolo: 8, volume: 33, anno: 2000,
pagine: 1475 - 1486
SICI:
0953-4075(20000428)33:8<1475:FICSOD>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSLATIONAL ENERGY-DISTRIBUTIONS; EXCITED HYDROGEN-ATOM; ALIPHATIC-HYDROCARBONS; VACUUM ULTRAVIOLET; AB-INITIO; PHOTOELECTRON-SPECTRA; FIPCO MEASUREMENTS; ETHYLENE; STATES; C2H;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Furuya, K Kyushu Univ, Dept Mol & Mat Sci, Fukuoka 8168580, Japan Kyushu Univ Fukuoka Japan 8168580 Sci, Fukuoka 8168580, Japan
Citazione:
K. Furuya et al., "Fragment ion-photon coincidence study of dissociative ionization accompanying light emission by electron impact on acetylene", J PHYS B, 33(8), 2000, pp. 1475-1486

Abstract

Fragment ion-photon coincidence (FIPCO) spectra by 120 eV electron impact on acetylene, C2H2, have been observed. Correlated detection of CH(A-X) emission and H+ and C+ ions, as well as between the CH+ ion and its own emission, was observed and verified with the help of Monte Carlo simulation of the band shapes observed. The translational energy distribution of the H+ ionis determined to be 1000 +/- 150 K (0.13 +/- 0.02 eV). Those for CH+ and C are 0.25 and 0.15 eV, respectively; the former translational energy accompanies a Gaussian distribution with a full-width at half-maximum (FWHM) of 0.2 eV, whereas the latter FWHM is 0.15 eV. A strong C2Hn+ (n = 0, 1) band is also observed in the FIPCO spectra and ascribed to dissociative processes following light emission from C2H+ and C2H(2)(+). Similar experiments have been carried out at 350 eV electron impact energy, to examine the dissociative processes accompanying the light emission caused by the ionization ofa C-1s electron. No significant difference is observed between the FIPCO spectra at 120 and 350 eV impact energy.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 08:08:56