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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
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organization
publishing date
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
2016-04-04 09:08:28
date last changed
2022-01-29 08:28:12
@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          = {{https://lup.lub.lu.se/search/files/5242798/2297673.pdf}},
  doi          = {{10.1016/S0301-0104(01)00378-0}},
  volume       = {{270}},
  year         = {{2001}},
}