DOUBLE-RESONANCE SPECTROSCOPY OF NAI AND KI - THE VAN-DER-WAALS STATES OMEGA=1 AND OMEGA=2 OF THE 1ST ATOMIC ASYMPTOTE

被引：3

作者：

BLUHM, H

LINDNER, J

TIEMANN, E

机构：

[1] Institut für Atom-und Molekülphysik, Abteilung Spektroskopie, Universität Hannover, D-30167 Hannover

来源：

CHEMICAL PHYSICS | 1994年 / 181卷 / 1-2期

关键词：

D O I：

10.1016/0301-0104(94)85023-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The energy region of the lowest atomic asymptote of NaI and KI was investigated in a high-resolution LAMBDA-type optical double resonance experiment with the highly excited covalent C0+ state as resonant intermediate. For the first time two van der Waals states with electronic angular momenta OMEGA = 1 and OMEGA = 2 were observed correlating to the ground states of sodium and potassium with iodine. The electronic system C0+-OMEGA = 2 shows a significant transition moment because of the heterogeneous coupling with OMEGA = 1 at large rotational quantum numbers. For the new states the Dunham parameters and the RKR potential curves were determined. In addition, for the OMEGA = 1 states modified Hartree-Fock dispersion potentials, were calculated by a least-squares fit of the observed energy levels and the dissociation energy of both molecules could be derived with an accuracy of a few wavenumbers.

引用

页码：173 / 184

页数：12

共 29 条

[1] THE ULTRA-VIOLET ABSORPTION SPECTRA OF SOME GASEOUS ALKALI-METAL HALIDES AND THE DISSOCIATION ENERGY OF FLUORINE [J].

BARROW, RF ;

CAUNT, AD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1953, 219 (1136) :120-140

[2] DISCRETE STRUCTURE IN SPECTRUM OF SODIUM IODIDE VAPOR [J].

BERG, RA ;

SKEWES, GW .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (12) :5430-&

[3]

BERRY RS, 1957, J CHEM PHYS, V6, P724

[4]

Blatt J. M., 1967, J COMP PHYSIOL, V1, P382, DOI [10.1016/0021-9991(67)90046-0, DOI 10.1016/0021-9991(67)90046-0]

[5] HIGH-RESOLUTION SPECTROSCOPY OF NAI AROUND THE ATOMIC ASYMPTOTES NA (3P2P1/2,3/2)+I (2P3/2) [J].

BLUHM, H ;

LINDNER, J ;

TIEMANN, E .

JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (07) :4556-4559

[6]

BLUHM H, 1992, THESIS HANNOVER

[7]

BLUHM H, IN PRESS J MOL SPECT

[8]

BRUHL R, 1991, J CHEM PHYS, V94, P5865, DOI 10.1063/1.460470

[9] FEMTOSECOND PROBING OF PERSISTENT WAVE PACKET MOTION IN DISSOCIATIVE REACTIONS - UP TO 40 PS [J].

CONG, P ;

MOKHTARI, A ;

ZEWAIL, AH .

CHEMICAL PHYSICS LETTERS, 1990, 172 (02) :109-113

[10]

CROSSWHITE HM, 1975, J RES NBS A PHYS CH, V79, P173

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