Selective Population Of Molecular Core Nonpenetrating Rydberg States

Grimes, David

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https://hdl.handle.net/2142/50944 Copy

Description

Title

Selective Population Of Molecular Core Nonpenetrating Rydberg States

Author(s)

Grimes, David

Contributor(s)

• Field, Robert W.
• Klein, Ethan
• Barnum, Timothy J.
• Zhou, Yan

Issue Date

2014-06-19

Keyword(s)

Chirped pulse

Abstract

"Core nonpenetrating Rydberg states of molecules are a neglected state of matter. They could have a variety of uses, notably state-selective production of molecular ions. Due to the \textit{l}(\textit{l}+1)/r$^{2}$ centrifugal barrier that prevents the Rydberg electron in high-\textit{l} states from penetrating inside of the ion core, the electron is essentially uncoupled from the ion core, and the system becomes atom-like with long lifetimes, an ""almost good"" \textit{l} quantum number, and electronic transitions that follow $\Delta$J$^{+}$=0 and $\Delta$v$^{+}$=0 propensity rules. However, in most molecules access to these states, via a sequence of $\Delta$\textit{l}=+1 transitions from low-n*, low-\textit{l} states, is blocked by the necessity to traverse the ""zone of death,"" in which nonradiative decay mechanisms are prohibitively fast. We exploit Chirped Pulse millimeter-Wave (CPmmW) spectroscopy to efficiently excite Ca atoms and BaF molecules to core nonpenetrating states in the absence of nonradiative decay mechanisms. A universal method for preparing core nonpenetrating Rydberg states of molecules, which combines CPmmW spectroscopy with STImulated Raman Adiabatic Passage (STIRAP), will be discussed."

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50944

DOI

https://doi.org/10.15278/isms.2014.RE07

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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