1969
DOI: 10.1063/1.1671203
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Radio-Frequency Spectrum of KBr by the Molecular-Beam Electric-Resonance Method

Abstract: It is necessary to use this form of the rate equations which involves the negative, rather than those which involve the positive exponentials [Eqs. (13) and (14) of Ref. 4J to avoid roundoff errors in the sums which would eliminate all significant figures. The averaged populations used in Eq. (0 are calculated by n=![n(±to) +exp( -=to) ·n(±to) J. (A6)In calculations for the intermediate-and high-pressure regions, the approximation can be used that nCO) =n8q THE JOURNAL OF CHEMICAL PHYSICS andn(±to) =n P , whe… Show more

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Cited by 37 publications
(10 citation statements)
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“…The molecules KBr and KI, along with several other alkali halides, were examined by both microwave and molecular beam methods relatively early in the history of these techniques [12][13][14][15][16][17][18]. Our current experiments improve upon these early measurements by 3 orders of magnitude in the precision of the hyperfine interactions for KBr and 5 orders of magnitude for KI.…”
Section: Introductionmentioning
confidence: 77%
“…The molecules KBr and KI, along with several other alkali halides, were examined by both microwave and molecular beam methods relatively early in the history of these techniques [12][13][14][15][16][17][18]. Our current experiments improve upon these early measurements by 3 orders of magnitude in the precision of the hyperfine interactions for KBr and 5 orders of magnitude for KI.…”
Section: Introductionmentioning
confidence: 77%
“…As mentioned earlier, we anticipated that the eQq constants of an alkali metal would take a value close to that in the corresponding alkali halide: 05.6698 and 04.93259 MHz for 23 Na in NaCl (19,20) and NaBr (21), respectively, and 05.656 and 05.0151 MHz for 39 K in KCl (22,23) and KBr (24), respectively. On the other hand, the eQq constant of boron would be quite small because the BH 4 anion would take an almost tetrahedral structure.…”
Section: Resultsmentioning
confidence: 97%
“…The dipole moments /Ze at the equilibrium bond length are quoted in table 4 and compared with experimental data [2][3][4] ; agreement is mostly better than 5 per cent. The variation of the dipole moment with vibrational excitation is shown in figures 1 and 2.…”
Section: Resultsmentioning
confidence: 97%
“…Values of/zi and/zIi are given in table 5 and are compared with experimental data [2][3][4]. extrapolate smoothly to Be at zero excitation.…”
Section: Resultsmentioning
confidence: 99%
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