Professor KATHARINE REID KATHARINE.REID@NOTTINGHAM.AC.UK
PROFESSOR OF CHEMICAL PHYSICS
Accessing the molecular frame through strong-field alignment of distributions of gas phase molecules
Reid, Katharine L.
Authors
Abstract
A rationale for creating highly aligned distributions of molecules is that it enables vector properties referenced to molecule-fixed axes (the molecular frame) to be determined. In the present work, the degree of alignment that is necessary in order for this to be achieved in practice is explored. Alignment is commonly parametrised in experiments by a single parameter, <cos²Θ>, which is insufficient to enable predictive calculations to be performed. Here it is shown that, if the full distribution of molecular axes takes a Gaussian form, this single parameter can be used to determine the complete set of alignment moments needed to characterise the distribution. In order to demonstrate the degree of alignment that is required in order to approach the molecular frame, the set of alignment moments corresponding to a few chosen values of <cos²Θ> are used to project a model molecular frame photoelectron angular distribution into the laboratory frame. These calculations show that <cos²Θ> needs to approach 0.9 in order to avoid significant blurring to be caused by averaging.
Citation
Reid, K. L. (2018). Accessing the molecular frame through strong-field alignment of distributions of gas phase molecules. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 376(2115), https://doi.org/10.1098/rsta.2017.0158
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 25, 2017 |
Online Publication Date | Feb 5, 2018 |
Publication Date | Mar 13, 2018 |
Deposit Date | Oct 30, 2017 |
Publicly Available Date | Feb 5, 2018 |
Journal | Philosophical Transactions A: Mathematical, Physical and Engineering Sciences |
Print ISSN | 1364-503X |
Electronic ISSN | 1471-2962 |
Publisher | The Royal Society |
Peer Reviewed | Peer Reviewed |
Volume | 376 |
Issue | 2115 |
DOI | https://doi.org/10.1098/rsta.2017.0158 |
Public URL | https://nottingham-repository.worktribe.com/output/920022 |
Publisher URL | http://rsta.royalsocietypublishing.org/content/376/2115/20170158 |
Contract Date | Oct 30, 2017 |
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