LASER SPECTROSCOPY OF CROSSED MOLECULAR-BEAMS - THE DISSOCIATION-ENERGY OF BAL FROM ENERGY-BALANCE MEASUREMENTS

被引：26

作者：

VACCARO, PH ^{[1
]}

ZHAO, D ^{[1
]}

TSEKOURAS, AA ^{[1
]}

LEACH, CA ^{[1
]}

ERNST, WE ^{[1
]}

ZARE, RN ^{[1
]}

机构：

[1] STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305

来源：

JOURNAL OF CHEMICAL PHYSICS | 1990年 / 93卷 / 12期

关键词：

D O I：

10.1063/1.459292

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：

Through application of energy-balance arguments to the crossed-beam reaction Ba(1S0) + HI(X1-SIGMA+)-->BaI(X2-SIGMA-+) + H(2S1/2), a lower limit for the BaI bond dissociation energy is determined to be D0(0)(Bal) greater-than-or-similar-to 76.8 +/- 1.7 kcal/mol (3.33 +/- 0.07 eV). Based on the upper bound of D0(0) (BaI) greater-than-or-similar-to 78.5 +/- studies [M.A. Johnson, J. Allison, and R.N. Zare, J. Chem. Phys. 85 5723 (1986)], we recommend a BaI bond strength of 77.7 +/- 2.0 kcal/mol (3.37 +/- 0.09 eV). This dissociation energy is more than 5 kcal/mol higher than the previously accepted value of D0(0) (BaI) as derived from mass spectrometric measurements.

引用

页码：8544 / 8556

页数：13

共 48 条

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