CaltechAUTHORS
  A Caltech Library Service

(1+1) resonant enhanced multiphoton ionization via the A ^2Σ^+ state of NO: Ionic rotational branching ratios and their intensity dependence

Rudolph, H. and Dixit, S. N. and McKoy, V. and Huo, W. M. (1988) (1+1) resonant enhanced multiphoton ionization via the A ^2Σ^+ state of NO: Ionic rotational branching ratios and their intensity dependence. Journal of Chemical Physics, 88 (3). pp. 1516-1521. ISSN 0021-9606. http://resolver.caltech.edu/CaltechAUTHORS:20120725-091029378

[img]
Preview
PDF - Published Version
See Usage Policy.

706Kb
[img]
Preview
PDF - Erratum
See Usage Policy.

55Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20120725-091029378

Abstract

Recent high resolution photoelectron spectroscopic studies of the (1+1) resonant enhanced multiphoton ionization (REMPI) of NO via the 0–0 transition of the A–X band (γ band) have shown a pronounced ΔN=0 signal (ΔN≡N_+−N_i) and smaller, but measurable, ΔN=±2 peaks. The authors [K. S. Viswanathan et al., J. Phys. Chem. 90, 5078 (1986)] assign the excitation to be via an R(21.5) line, with no further specification. We have performed ab initio calculations of the rotational branching ratios for the four possible ‘‘R(21.5)’’ transitions, namely, the rotationally ‘‘clean’’ R_(21) and R_(22), and the ‘‘mixed’’ R_(12)+Q_(22) and R_(11)+Q_(21) branches. We find the mixed R_(12)+Q_(22)(21.5) branch to agree best with the observed photoelectron spectrum collected parallel to the polarization vector of the light. The discrepancy is larger for detection perpendicular to the polarization. To understand this difference, we have assessed the influence of laser intensity and polarization ‘‘contamination’’ on the branching ratios and photoelectron angular distributions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.454130DOIUNSPECIFIED
http://jcp.aip.org/resource/1/jcpsa6/v88/i3/p1516_s1PublisherUNSPECIFIED
http://dx.doi.org/10.1063/1.455738 ErrataUNSPECIFIED
http://jcp.aip.org/resource/1/jcpsa6/v89/i4/p2591_s1ErrataUNSPECIFIED
Additional Information:© 1988 American Institute of Physics. Received 28 August 1987; accepted 20 October 1987. This material is based on research supported by the National Science Foundation under Grant No. CHE-8521391, by AFOSR under Grant No. 87-0039, by the office of Health and Environmental Research of DOE (DE-FG03- 87ER60513), and by NASA Cooperative Agreement NCC2-319. Work done by S. N. D. was performed under the auspices of the U. S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48. H. R. gratefully acknowledges the support of the Danish Natural Science Research Council.
Funders:
Funding AgencyGrant Number
NSFCHE-8521391
Air Force Office of Scientific Research (AFOSR)87-0039
Department of Energy (DOE) Office of Health and Environmental Research DE-FG03-87ER60513
NASA Cooperative AgreementNCC2-319
Department of Energy (DOE)W-7405-Eng-48
Danish Natural Science Research CouncilUNSPECIFIED
Subject Keywords:MULTI−PHOTON PROCESSES, PHOTOIONIZATION, RESONANCE, NITRIC OXIDE, PHOTOELECTRON SPECTROSCOPY, ROTATIONAL STATES, BRANCHING RATIO, ANGULAR DISTRIBUTION
Classification Code:PACS: 33.80.Rv; 33.60.+q; 33.70.Fd
Record Number:CaltechAUTHORS:20120725-091029378
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120725-091029378
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32700
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Jul 2012 20:38
Last Modified:26 Dec 2012 15:43

Repository Staff Only: item control page