Depolarization of rotational angular momentum in CN(A2Π, v = 4) + Ar collisions

The Journal of Chemical Physics
Stephen J McGurkPaul J Dagdigian

Abstract

Angular momentum depolarization and population transfer in CN(A(2)Π, v = 4, j, F(1)e) + Ar collisions have been investigated both experimentally and theoretically. Ground-state CN(X(2)Σ(+)) molecules were generated by pulsed 266-nm laser photolysis of ICN in a thermal (nominally 298 K) bath of the Ar collision partner at a range of pressures. The translationally thermalized CN(X) radicals were optically pumped to selected unique CN(A(2)Π, v = 4, j = 2.5, 3.5, 6.5, 11.5, 13.5, and 18.5, F(1)e) levels on the A-X (4,0) band by a pulsed tunable dye laser. The prepared level was monitored in a collinear geometry by cw frequency-modulated (FM) spectroscopy in stimulated emission on the CN(A-X) (4,2) band. The FM lineshapes for co- and counter-rotating circular pump and probe polarizations were analyzed to extract the time dependence of the population and (to a good approximation) orientation (tensor rank K = 1 polarization). The corresponding parallel and perpendicular linear polarizations yielded population and alignment (K = 2). The combined population and polarization measurements at each Ar pressure were fitted to a 3-level kinetic model, the minimum complexity necessary to reproduce the qualitative features of the data. Rate con...Continue Reading

References

Mar 12, 2004·Annual Review of Physical Chemistry·T HollebeekH Rabitz
Jul 23, 2004·The Journal of Chemical Physics·Matthew L CostenKenneth G McKendrick
Jun 11, 2005·The Journal of Chemical Physics·Matthew L Costen, Kenneth G McKendrick
Feb 24, 2006·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Azhagammai AlagappanKenneth G McKendrick
Dec 23, 2006·Physical Chemistry Chemical Physics : PCCP·Matthew L Costen, Gregory E Hall
Feb 3, 2007·Physical Chemistry Chemical Physics : PCCP·Azhagammai AlagappanGrant Paterson
Feb 9, 2007·The Journal of Chemical Physics·Azhagammai AlagappanKenneth G McKendrick
Aug 10, 2007·Physical Chemistry Chemical Physics : PCCP·Sarantos MarinakisKenneth G McKendrick
Jan 22, 2008·The Journal of Chemical Physics·Sarantos MarinakisKenneth G McKendrick
Mar 19, 2008·The Journal of Chemical Physics·Jiande HanMillard H Alexander
Mar 26, 2008·Chemical Society Reviews·Matthew L CostenKenneth G McKendrick
Jun 17, 2008·The Journal of Chemical Physics·Jiande HanUdo Schnupf
Dec 3, 2008·The Journal of Chemical Physics·Grant PatersonRobert Toboła
Feb 5, 2009·The Journal of Chemical Physics·M BrouardJ Kłos
Mar 12, 2009·The Journal of Chemical Physics·Paul J Dagdigian, Millard H Alexander
May 2, 2009·The Journal of Chemical Physics·Paul J Dagdigian, Millard H Alexander
Jun 3, 2009·The Journal of Chemical Physics·Paul J Dagdigian, Millard H Alexander
Sep 18, 2009·The Journal of Physical Chemistry. a·M L CostenJ Kłos
May 8, 2010·Physical Chemistry Chemical Physics : PCCP·Grant PatersonKenneth G McKendrick
Aug 17, 2011·The Journal of Chemical Physics·Paul J Dagdigian, Millard H Alexander
Sep 8, 2011·The Journal of Chemical Physics·M BrouardJ Kłos
Dec 24, 2011·The Journal of Chemical Physics·G PatersonP J Dagdigian

❮ Previous
Next ❯

Citations

Oct 5, 2013·The Journal of Chemical Physics·S J McGurkP J Dagdigian
Feb 21, 2014·The Journal of Physical Chemistry. a·Stephen J McGurkMatthew L Costen
Mar 31, 2015·The Journal of Physical Chemistry. a·Damien ForthommeGregory E Hall

❮ Previous
Next ❯

Software Mentioned

Gamma
MOLPRO
LabView
displaystyle
HIBRIDON
scriptstyle

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.