Rotational Cooling Dynamics Of Hot Trapped Oh^− Ions Probed By Vmi Photoelectron Spectroscopy

Shahi, Abhishek

Permalink

https://hdl.handle.net/2142/111168 Copy

Description

Title

Rotational Cooling Dynamics Of Hot Trapped Oh⁻ Ions Probed By Vmi Photoelectron Spectroscopy

Author(s)

Shahi, Abhishek

Contributor(s)

• Zajfman, Daniel
• Heber, Oded
• Gupta, Dhanoj
• Mishra, Saurabh

Issue Date

2021-06-25

Keyword(s)

Photodissociation and photochemistry

Abstract

A VMI photoelectron spectroscopy inside an electrostatic ion beam trap (EIBT) is used to probe the time dependent dynamics of rotational states population. The photodetachement of OH$^{-}$ ion results neutral OH in its $\Pi$$_{3/2}$ and $\Pi$$_{1/2}$ states and corresponding VMI photoelectron spectra of unresolved P-branch transitions are shown in figure for different times in the EIBT. As storage time increases, the peak radius of P-transitions decreases indicate that population of high rotational levels shift to the low rotational levels. Intersting findinds on internal dynamics of OH$^{-}$ as a function of storage time, change in individual rotational states population as a function of storage time, rate coefficients of such cooling process will be discussed in details during presentation. \begin{wrapfigure}{l}{18cm} \centering \includegraphics[scale=0.3]{OH-_cooling.eps} \caption{Figure: VMI spectra of OH$^{-}$ probed by a CW laser (682nm) as a function of trapping time} \end{wrapfigure}

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111168

DOI

10.15278/isms.2021.FJ04

Owning Collections