Laser Photodetachment Determination of the Electron Affinities of OH, NH2, NH, SO2, and S2

Published

March 1, 1974

Author(s)

Robert Celotta, R Bennett, John L. Hall

Abstract

Using a fixed frequency argon ion laser, we have studied the energy spectra of electron photodetached from OH^-, NH₂^-, NH^-, SO₂^-, and S₂^-. We determined the following electron affinities: E_A(OH) = 1.829^+0.010_-0.014 eV, E_A(NH₂) = 0.779plus or minus}0.037 eV, A^(NH) = 0.38plus or minus}0.03 eV, E_A(SO₂) = 1.097plus or minus}0.036 eV, and E_A(S₂) = 1.663plus or minus}0.040 eV. Additionally, the angular distribution anisotrophy parameter β was measured for OH^- and NH₂-^ at 4880 Aring}, as -0.993 plus or minus} 0.040 and 0.027 plus or minus} 0.012 respectively, a nd information about negative ion vibrational constants is presented.

Citation

Journal of Chemical Physics

Volume

60

Issue

5

Pub Type

Journals

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Citation

Celotta, R. , Bennett, R. and Hall, J. (1974), Laser Photodetachment Determination of the Electron Affinities of OH, NH₂, NH, SO₂, and S₂, Journal of Chemical Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620073 (Accessed May 10, 2026)

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