Optimizing recoil-isomer tagging with the Argonne fragment mass analyzer

Autor:	A. B. Garnsworthy, S. Gros, D. J. Henderson, N. J. Thompson, G. A. Jones, I. J. Cullen, C. J. Lister, S. J. Williams, D. Seweryniak, B. Shumard, Zhi Liu, P. H. Regan, S. Zhu, B. Blank
Rok vydání:	2008
Předmět:	Physics Nuclear and High Energy Physics Range (particle radiation) Physics::Instrumentation and Detectors Fragment (computer graphics) Detector Gamma ray Nuclear physics Microsecond Recoil Cardinal point Mass analyzer Nuclear Experiment Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 594:184-187
ISSN:	0168-9002
DOI:	10.1016/j.nima.2008.06.016
Popis:	A new focal plane detector arrangement for the Fragment Mass Analyzer (FMA) has been built and tested at Argonne National Laboratory. This set-up is particularly sensitive for performing Recoil-Isomer Tagging on nuclei with isomeric states with lifetimes in the microsecond range. Recoiling nuclei from fusion–evaporation reactions at the target position are dispersed by their ratio of mass to charge ( A / q ) by the FMA and stopped in low pressure gas (air) at the focal plane. Subsequent gamma decays from isomeric states in the reaction products are observed using Ge detectors. A constant gas flow through the focal plane chamber efficiently removes longer-lived beta-decaying species from sight of the detectors. This set-up has been commissioned successfully with the microsecond isomer in 80Rb, populated via the 52Cr(32S, 3pn) reaction at 135 MeV.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0e2b82315aa9a51f6b5460d3c5ef291f https://doi.org/10.1016/j.nima.2008.06.016 Full Text from ScienceDirect