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Title: Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide

Abstract

Here, we present a study of the ultrafast dissociation dynamics of the lowest-lying electronic excited states in CO 2 by using ultraviolet (UV) and extreme-ultraviolet (XUV) pulses from high-order harmonic generation. We observe two primary dissociation channels: a direct dissociation channel along the 1Π g electronically excited manifold, and a second channel which results from the mixing of electronic states. The direct dissociation channel is found to have a lifetime which is shorter than our experimental resolution, whereas the second channel has a significantly longer lifetime of nearly 200 fs. In this long-lived channel we observe a beating of the vibrational populations with a period of ~133 fs.

Authors:
 [1];  [2];  [3];  [4];  [5];  [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); National Tsing Hua Univ., Hsinchu (Taiwan)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1353182
Alternate Identifier(s):
OSTI ID: 1344184; OSTI ID: 1459385
Grant/Contract Number:  
AC02-05CH11231; 102-2917-I-007-033; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 95; Journal Issue: 2; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Wright, Travis W., Champenois, Elio G., Cryan, James P., Shivaram, Niranjan, Yang, Chan -Shan, and Belkacem, Ali. Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide. United States: N. p., 2017. Web. doi:10.1103/PhysRevA.95.023412.
Wright, Travis W., Champenois, Elio G., Cryan, James P., Shivaram, Niranjan, Yang, Chan -Shan, & Belkacem, Ali. Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide. United States. doi:10.1103/PhysRevA.95.023412.
Wright, Travis W., Champenois, Elio G., Cryan, James P., Shivaram, Niranjan, Yang, Chan -Shan, and Belkacem, Ali. Fri . "Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide". United States. doi:10.1103/PhysRevA.95.023412. https://www.osti.gov/servlets/purl/1353182.
@article{osti_1353182,
title = {Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide},
author = {Wright, Travis W. and Champenois, Elio G. and Cryan, James P. and Shivaram, Niranjan and Yang, Chan -Shan and Belkacem, Ali},
abstractNote = {Here, we present a study of the ultrafast dissociation dynamics of the lowest-lying electronic excited states in CO2 by using ultraviolet (UV) and extreme-ultraviolet (XUV) pulses from high-order harmonic generation. We observe two primary dissociation channels: a direct dissociation channel along the 1Πg electronically excited manifold, and a second channel which results from the mixing of electronic states. The direct dissociation channel is found to have a lifetime which is shorter than our experimental resolution, whereas the second channel has a significantly longer lifetime of nearly 200 fs. In this long-lived channel we observe a beating of the vibrational populations with a period of ~133 fs.},
doi = {10.1103/PhysRevA.95.023412},
journal = {Physical Review A},
number = 2,
volume = 95,
place = {United States},
year = {Fri Feb 17 00:00:00 EST 2017},
month = {Fri Feb 17 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
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