Speaker
Chris Chambers
(Colorado State University)
Description
The ability to detect or "tag" the 136Ba daughter of 136Xe double beta decay in the nEXO liquid xenon TPC has the potential to eliminate essentially all background in the a second phase of nEXO operation. Several promising techniques for barium tagging are being developed within the nEXO collaboration. These include capturing the single 136Ba ion/atom in solid xenon on a cryogenic probe and detecting it by laser spectroscopy and capturing the single 136Ba on a conducting probe and detecting it by laser ablation and resonance ionization spectroscopy. The extraction of the 136Ba+ ion from the TPC and capture and detection in an ion trap is also being explored. Recent progress in barium tagging at the single ion/atom level will be presented.
Primary authors
Chris Chambers
(Colorado State University)
Bill Fairbank
(Colorado State University)
