Bulletin of the American Physical Society
Four Corners Section 2022 Meeting
Volume 67, Number 14
Friday–Saturday, October 14–15, 2022; Albuquerque, New Mexico
Session J03: Atomic, Molecular, and Optical Physics II
8:30 AM–9:54 AM,
Saturday, October 15, 2022
UNM
Room: PAIS 1160
Chair: Dylan Yost, Colorado State University
Abstract: J03.00005 : Barium tagging for Enhanced Double Beta Decay search for Majorana Neutrinos*
9:18 AM–9:30 AM
Presenter:
Jennifer Stanley
(Colorado State University)
Authors:
William M M Fairbank
(Colorado State University)
Jennifer Stanley
(Colorado State University)
Joe Soderstrom
(Colorado State University)
Connor Taylor
(Colorado State University)
Mari Yvaine
(Colorado State University)
Collaboration:
nEXO Collaboration
We have identified the 670 nm emission from Ba in solid xenon as being due to the 6s6p 3P1 to 6s2 1S0 transition of Ba atoms trapped in single vacancy sites within the solid xenon matrix. The 670 nm fluorescence increases with temperature from 10K to 40 K. This opens the possibility of single Ba imaging at 40 K, as opposed to around 10 K for previous work.1 An interesting property of solid xenon is that its density decreases dramatically below 40 K. We have found that thin (~0.5 µm) solid xenon deposits stay clear to 10 K despite this density change, but thick (~100 µm) solid xenon deposits crack below 40 K. Pictures will be presented. Being able to image single Ba atoms in solid xenon at 40 K through the 670 nm emission could be very important, as it would allow thick deposits in the Ba daughter extraction process.
*This research was supported by the National Science Foundation grant number 2011948.
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