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Titolo:
High resolution infrared direct absorption spectroscopy of ionic complexes
Autore:
Linnartz, H; Verdes, D; Speck, T;
Indirizzi:
Univ Basel, Inst Phys Chem, CH-4056 Basel, Switzerland Univ Basel Basel Switzerland CH-4056 ys Chem, CH-4056 Basel, Switzerland
Titolo Testata:
REVIEW OF SCIENTIFIC INSTRUMENTS
fascicolo: 4, volume: 71, anno: 2000,
pagine: 1811 - 1815
SICI:
0034-6748(200004)71:4<1811:HRIDAS>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXCITED SUPERSONIC EXPANSION; COOLED MOLECULAR-IONS; AR-HCO+; LASER SPECTROSCOPY; JET EXPANSION; SPECTRUM; RADICALS; CLUSTER; N-4(+); BAND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Linnartz, H Univ Basel, Inst Phys Chem, Klingelbergstr 80, CH-4056 Basel, Switzerland Univ Basel Klingelbergstr 80 Basel Switzerland CH-4056 erland
Citazione:
H. Linnartz et al., "High resolution infrared direct absorption spectroscopy of ionic complexes", REV SCI INS, 71(4), 2000, pp. 1811-1815

Abstract

A sensitive and generally applicable technique for high resolution infrared spectroscopy of weakly bound ionic complexes is presented. The method is based on the direct absorption of tunable diode laser radiation in an expansion cooled planar plasma. The plasma is generated by electron impact ionization of gas that is expanded supersonically through a long and narrow slit. This technique allows a fast and effective production modulation. Online monitoring by a quadrupole mass spectrometer yields direct information on the plasma characteristics. Rotational temperatures as low as 15 K and densities of the order of 10(9)-10(10) complexes/cm3 are routinely obtained. Thetechnique is discussed on the example of N-4(+) and demonstrated with results on the proton bound complexes N-2-H+-N-2, Ar-HN2+, and Ar-HCO+. (C) 2000 American Institute of Physics. [S0034-6748(00)00804-2].

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Documento generato il 05/12/20 alle ore 10:24:03