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Title: Auger decay of 1 σ g and 1 σ u hole states of the N 2 molecule: Disentangling decay routes from coincidence measurements

Journal Article · · Physical Review A - Atomic, Molecular, and Optical Physics
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [2];  [4];  [5];  [5];  [5];  [5];  [4];  [2];  [5];  [6];  [2]
  1. State Univ. of Aerospace Instrumentation, St. Petersburg (Russian Federation)
  2. Univ. of Frankfurt (Germany)
  3. Univ. of Frankfurt (Germany); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Auburn Univ., AL (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. State Univ. of Aerospace Instrumentation, St. Petersburg (Russian Federation); Univ. of Frankfurt (Germany)
+ Show Author Affiliations

Results of the most sophisticated measurements in coincidence with the angular-resolved K-shell photoelectrons and Auger electrons and with two atomic ions produced by dissociation of N2 molecule are analyzed. Detection of photoelectrons at certain angles makes it possible to separate the Auger decay processes of the 1σg and 1σu core-hole states. The Auger electron angular distributions for each of these hole states are measured as a function of the kinetic-energy release of two atomic ions and are compared with the corresponding theoretical angular distributions. From that comparison one can disentangle the contributions of different repulsive doubly charged molecular ion states to the Auger decay. Different kinetic-energy-release values are directly related to the different internuclear distances. In this way one can trace experimentally the behavior of the potential energy curves of dicationic final states inside the Frank-Condon region. Presentation of the Auger-electron angular distributions as a function of kinetic-energy release of two atomic ions opens a new dimension in the study of Auger decay.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Chemical Sciences, Geosciences & Biosciences Division (SC-22.1)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1511319
Journal Information:
Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 81, Issue 4; ISSN 1050-2947
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (6)

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects journal January 2012
Time-resolved x-ray/optical pump-probe simulations on N 2 molecules journal March 2019
Molecular frame Auger electron energy spectrum from N 2 journal February 2012
Interatomic Coulombic decay of fixed-in-space neon dimers journal April 2012
Ultrafast x-ray-induced nuclear dynamics in diatomic molecules using femtosecond x-ray-pump–x-ray-probe spectroscopy journal July 2016
Ultrafast x-ray-induced nuclear dynamics in diatomic molecules using femtosecond x-ray-pump–x-ray-probe spectroscopy text January 2016

Figures / Tables (9)

FIG. 1(p. 10)figure FIG. 1
FIG. 2(p. 11)figure FIG. 2
FIG. 3(p. 12)figure FIG. 3
FIG. 4(p. 12)figure FIG. 4
FIG. 5(p. 14)figure FIG. 5
FIG. 6(p. 15)figure FIG. 6
FIG. 7(p. 16)figure FIG. 7
FIG. 8(p. 18)figure FIG. 8
FIG. 9(p. 19)figure FIG. 9

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