Prospects For Barium Tagging In Gaseous Xenon

D Sinclair,E M Rollin, J G Smith,Alexander A Mommers, N Ackeran, B Aharmin,M Auger,P S Barbeau,C Benitezmedina,M Breidenbach,A A Burenkov,S Cook,A Coppens, T C Daniels,R Devoe,A Dobi,M J Dolinski,K Donato,William M Fairbank,J Farine,G Giroux, G Gornea, Katherine A H Graham,G Gratta,M P Green, C Hagemann,C A Hall,K Hall, D Hallman,C K Hargrove,S Herrin, L Kaufman,D S Leonard,F Leport, D S Mackay, R Maclennan,B Mong,M Montero Diez,A Muller,Ronald P Neilson, E Niner,A Odian,K Osullivan, C Ouellet,A Piepke,A Pocar, C Prescott,K N Pushkin,P C Rowson,S Slutsky,V N Stekhanov, K Twelker, N Voskanian,J L Vuilleumier, U Wichoski, J Wodin,Li Yang,Y R Yen

5TH SYMPOSIUM ON LARGE TPCS FOR LOW ENERGY RARE EVENT DETECTION AND WORKSHOP ON NEUTRINOS FROM SUPERNOVAE（2011）

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摘要

Tagging events with the coincident detection of a barium ion would greatly reduce the background for a neutrino-less double beta decay search in xenon. This paper describes progress towards realizing this goal. It outlines a source that can produce large quantities of Ba++ in gas, shows that this can be extracted to vacuum, and demonstrates a mechanism by which the Ba++ can be efficiently converted to Ba+ as required for laser identification.

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关键词

double beta decay,coincidence detection,high pressure,atmospheric pressure,water vapour

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