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Efficient, high-resolution resonance laser ionization spectroscopy using weak transitions to long-lived excited states

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Groote, R. P. D., Verlinde, M., Sonnenschein, V., Flanagan, K. T., & Moore, I. (2017). Efficient, high-resolution resonance laser ionization spectroscopy using weak transitions to long-lived excited states. Physical Review A, 95(3), Article 032502. https://doi.org/10.1103/PhysRevA.95.032502
Published in
Physical Review A
Authors
Groote, R. P. de |
Verlinde, M. |
Sonnenschein, Volker |
Flanagan, K. T. |
Moore, Iain
Date
2017
Discipline
KiihdytinlaboratorioAccelerator Laboratory
Copyright
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.

 
Laser spectroscopic studies on minute samples of exotic radioactive nuclei require very efficient experimental techniques. In addition, high resolving powers are required to allow extraction of nuclear structure information. Here we demonstrate that by using weak atomic transitions, resonance laser ionization spectroscopy is achieved with the required high efficiency (1%–10%) and precision (linewidths of tens of MHz). We illustrate experimentally and through the use of simulations how the narrow experimental linewidths are achieved and how distorted resonance ionization spectroscopy line shapes can be avoided. The role of the delay of the ionization laser pulse with respect to the excitation laser pulse is crucial: the use of a delayed ionization step permits the best resolving powers and line shapes. A high efficiency is maintained if the intermediate level has a lifetime that is at least of the order of the excitation laser pulse width. A model that describes this process reproduces well the observed features and will help to optimize the conditions for future experiments. The simulation code is available upon request to the authors. ...
Publisher
American Physical Society
ISSN Search the Publication Forum
2469-9926
Keywords
resonance laser ionization spectroscopy exotic nuclei excited states
DOI
https://doi.org/10.1103/PhysRevA.95.032502
URI

http://urn.fi/URN:NBN:fi:jyu-201703271765

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/26923607

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