DOI: 10.1063/1.459974. Resonances in the photodetachment cross section of Au−2

Resonances in the photodetachment cross section of Au−2

10.1063/1.459974

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

This paper reports the observation of autodetaching resonances in photoelectron spectroscopy of Au−2 according to the process Au−2 +hν■(Au−2)*■Au2 +e−. They appear as sharp features superimposed upon a nearly constant signal associated with direct photodetachment process from Au−2 :Au−2 +hν■Au2+e−. By altering the cluster expansion conditions, the dimer anion temperature can be varied. This leads to changes in the linewidth and relative intensities of the resonances and allows ground state and hot band transitions to be identified. The resonances correspond to electronic transitions to a long-lived excited state of Au−2 with a significantly lower vibrational frequency (128±2 cm−1) than that of the neutral ground state (190.9 cm−1), or even the anion ground state (149 cm−1). It decays via electronic autodetachment in a two-electron process similar to autoionization of neutral atoms.

Bibliography

Gantefor, G. F., Cox, D. M., & Kaldor, A. (1991). Resonances in the photodetachment cross section of Auâ2. The Journal of Chemical Physics, 94(2), 854â858.

Authors 3

G. F. Gantefor (first)
D. M. Cox (additional)
A. Kaldor (additional)

References 19 Referenced 20

10.1063/1.452170 / J. Chem. Phys. (1987)
10.1103/PhysRevA.28.1429 / Phys. Rev. A (1983)
10.1063/1.1139475 / Rev. Sci. Instrum (1987)
10.1103/PhysRevA.37.2716 / Phys. Rev. A (1988)
10.1103/RevModPhys.45.378 / Rev. Mod. Phys. (1973)
10.1103/RevModPhys.45.423 / Rev. Mod. Phys. (1973)
10.1016/0368-2048(89)80018-0 / J. Electron. Spectrosc. Relat. Phenom. (1989)
10.1063/1.441064 / J. Chem. Phys. (1981)
{'key': '2024021010534940000_r7'}
10.1063/1.438579 / J. Chem. Phys. (1979)
10.1063/1.454424 / J. Chem. Phys. (1988)
{'key': '2024021010534940000_r10'}
{'key': '2024021010534940000_r11'}
{'key': '2024021010534940000_r12'}
{'key': '2024021010534940000_r13'}
10.1103/PhysRevLett.64.1785 / Phys. Rev. Lett. (1990)
{'key': '2024021010534940000_r14a'}
{'key': '2024021010534940000_r15'}
10.1063/1.454272 / J. Chem. Phys. (1988)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:20 a.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 7:40 a.m.)
Indexed	1 year, 1 month ago (Aug. 2, 2024, 9:18 a.m.)
Issued	34 years, 7 months ago (Jan. 15, 1991)
Published	34 years, 7 months ago (Jan. 15, 1991)
Published Print	34 years, 7 months ago (Jan. 15, 1991)

Funders 0

None

BibTeX

@article{Gantefor_1991, title={Resonances in the photodetachment cross section of Au−2}, volume={94}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.459974}, DOI={10.1063/1.459974}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Gantefor, G. F. and Cox, D. M. and Kaldor, A.}, year={1991}, month=jan, pages={854–858} }

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