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Titolo:
Absorption spectroscopy of singlet CH2 near 11 200 cm(-1)
Autore:
Kobayashi, K; Sears, TJ;
Indirizzi:
Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 ab, Dept Chem, Upton, NY 11973 USA
Titolo Testata:
CANADIAN JOURNAL OF PHYSICS
fascicolo: 2-3, volume: 79, anno: 2001,
pagine: 347 - 358
SICI:
0008-4204(200110)79:2-3<347:ASOSCN>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
FREQUENCY-MODULATION SPECTROSCOPY; MAGNETIC-ROTATION SPECTROSCOPY; ORBITAL ANGULAR-MOMENTUM; METHYLENE RADICAL CH2; VIBRATIONAL RESONANCES; VISIBLE ABSORPTION; 1A1 STATE; SPECTRUM; TRANSITIONS; (CH2)-C-1;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Sears, TJ Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 hem, Upton, NY 11973 USA
Citazione:
K. Kobayashi e T.J. Sears, "Absorption spectroscopy of singlet CH2 near 11 200 cm(-1)", CAN J PHYS, 79(2-3), 2001, pp. 347-358

Abstract

New spectra of methylene, CH2, in the near infrared region of the singlet band system have been obtained. They were detected by laser transient absorption spectroscopy following excimer laser flash photolysis of ketene, CH2CO, at 308 nm. The new data provide information on the nature and energies of rotational levels in three vibronic states that lie between approximately11 500 and 13 000 cm(-1) above the zero point level of the lower, (a) overtilde (1)A(1), state. Taken together with previous measurements, a fairly complete picture of the vibronic energy levels of CH2 in this region can bebuilt up. There is generally good agreement with the recent computational studies on the singlet states of CH2, but some evidence for discrepancies for levels with K = 3 and higher near the minimum of the (b) over tilde B-1(1) potential surface.

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Documento generato il 09/04/20 alle ore 19:47:39