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Lifetime measurements on the c '(1)(4)Sigma(+)(u), v=0, 1 and 2 states of molecular nitrogen

Ubachs, W; Lang, R; Velchev, I; Tchang-Brillet, W. U. L; Johansson, A; Li, Z. S; Lokhnygin, V and Wahlström, Claes-Göran LU (2001) In Chemical Physics 270(1). p.215-225
Abstract
Excited state lifetimes of c(4)('1)Sigma (+)(u), upsilon = 0-2 states of molecular nitrogen have been determined in a laboratory investigation using a picosecond XUV laser in a pump-probe configuration. For c(4)('1)Sigma (+)(u) upsilon = 0 the lifetime is tau = 740 +/- 50 ps, for the lowest rotational states. For higher rotational states a gradual shift towards tau = 495 ps is found in agreement with previous findings that these states are subject to predissociation. For c(4)(') Sigma (+)(u) upsilon = 1 no J-dependence is found and values for two isotopomers are reported: tau = 240 ps for (NN)-N-14-N-15 = 240 ps for (NN)-N-14-N-15. For c(4)('1)Sigma (+)(u) upsilon = 2 a lifetime for the lowest rotational states (J = 0-3) was derived: tau =... (More)
Excited state lifetimes of c(4)('1)Sigma (+)(u), upsilon = 0-2 states of molecular nitrogen have been determined in a laboratory investigation using a picosecond XUV laser in a pump-probe configuration. For c(4)('1)Sigma (+)(u) upsilon = 0 the lifetime is tau = 740 +/- 50 ps, for the lowest rotational states. For higher rotational states a gradual shift towards tau = 495 ps is found in agreement with previous findings that these states are subject to predissociation. For c(4)(') Sigma (+)(u) upsilon = 1 no J-dependence is found and values for two isotopomers are reported: tau = 240 ps for (NN)-N-14-N-15 = 240 ps for (NN)-N-14-N-15. For c(4)('1)Sigma (+)(u) upsilon = 2 a lifetime for the lowest rotational states (J = 0-3) was derived: tau = 675 +/- 50 ps; for J = 11 a lifetime of tau less than or equal to 120 ps is deduced. All values for the lifetimes including the J-dependences are explained in a model based on Rydberg-valence interaction. (C) 2001 Elsevier Science B.V. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Chemical Physics
volume
270
issue
1
pages
215 - 225
publisher
Elsevier
external identifiers
  • scopus:0035879308
ISSN
0301-0104
DOI
10.1016/S0301-0104(01)00378-0
language
English
LU publication?
yes
id
381f5987-89f4-48d1-bbca-9e3d2ab92338 (old id 2259643)
date added to LUP
2012-02-07 00:25:23
date last changed
2017-05-28 04:35:48
@article{381f5987-89f4-48d1-bbca-9e3d2ab92338,
  abstract     = {Excited state lifetimes of c(4)('1)Sigma (+)(u), upsilon = 0-2 states of molecular nitrogen have been determined in a laboratory investigation using a picosecond XUV laser in a pump-probe configuration. For c(4)('1)Sigma (+)(u) upsilon = 0 the lifetime is tau = 740 +/- 50 ps, for the lowest rotational states. For higher rotational states a gradual shift towards tau = 495 ps is found in agreement with previous findings that these states are subject to predissociation. For c(4)(') Sigma (+)(u) upsilon = 1 no J-dependence is found and values for two isotopomers are reported: tau = 240 ps for (NN)-N-14-N-15 = 240 ps for (NN)-N-14-N-15. For c(4)('1)Sigma (+)(u) upsilon = 2 a lifetime for the lowest rotational states (J = 0-3) was derived: tau = 675 +/- 50 ps; for J = 11 a lifetime of tau less than or equal to 120 ps is deduced. All values for the lifetimes including the J-dependences are explained in a model based on Rydberg-valence interaction. (C) 2001 Elsevier Science B.V. All rights reserved.},
  author       = {Ubachs, W and Lang, R and Velchev, I and Tchang-Brillet, W. U. L and Johansson, A and Li, Z. S and Lokhnygin, V and Wahlström, Claes-Göran},
  issn         = {0301-0104},
  language     = {eng},
  number       = {1},
  pages        = {215--225},
  publisher    = {Elsevier},
  series       = {Chemical Physics},
  title        = {Lifetime measurements on the c '(1)(4)Sigma(+)(u), v=0, 1 and 2 states of molecular nitrogen},
  url          = {http://dx.doi.org/10.1016/S0301-0104(01)00378-0},
  volume       = {270},
  year         = {2001},
}