An attempt at using TMA to improve the energy resolution of high-pressure Xe ionization chambers

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:513067

Bolotnikov, A; Ramsey, B ^[1]

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1. NASA, Marshall Space Flight Center, Huntsville, AL (United States)

Preliminary results of using TMA (trimethylamine) to improve the energy resolution of a high-pressure (>50 atm) Xe ionization chamber are presented. This work borrowed a technique which has been successfully applied to dope liquid Ar and Xe. However, problems related to the contamination of TMA were found to be more difficult to overcome. The maximum density of Xe at which the influence of impurities could be neglected was only 0.3 g/cm{sup 2} at a concentration of TMA of about 80 ppm. As in the case of liquid Xe, doping increases the collected charge and considerably improves energy resolution, but only at low fields.

• OSTI ID: 513067
• Report Number(s): CONF-961123-; TRN: 97:014119
• Resource Relation: Conference: Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Anaheim, CA (United States), 2-9 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 IEEE nuclear science symposium - conference record. Volumes 1, 2 and 3; Del Guerra, A. [ed.]; PB: 2138 p.
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
IONIZATION CHAMBERS
ENERGY RESOLUTION
MODIFICATIONS
XENON
METHYLAMINE
GAMMA SPECTRA