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A new focal-plane detector system for low fusion-evaporation cross section measurements

Authors :
S. Kurtz
C. N. Davids
D. Seweryniak
Shaofei Zhu
D. Peterson
R. V. F. Janssens
B. B. Back
C. J. Lister
D. J. Henderson
Michael Paul
C. L. Jiang
B. Shumard
S. K. Sinha
K. E. Rehm
T. Pennington
R. C. Pardo
X. D. Tang
Isao Tanihata
John P. Greene
Philippe Collon
Source :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 554:500-513
Publication Year :
2005
Publisher :
Elsevier BV, 2005.

Abstract

A new focal-plane detector system has been designed and constructed for measuring very small heavy-ion induced fusion-evaporation cross sections with the Fragment Mass Analyzer (FMA) at Argonne National Laboratory. The system has been tested and successfully used in a fusion-evaporation excitation function measurement for 64 Ni + 100 Mo down to the 5 nb level. The design and performance of the detector system are described in detail with some examples from the latest data. Besides excellent tracking capabilities for each event measured in the detector, suppression of scattered beam background of the order of 4 × 10 - 17 has been demonstrated.

Details

ISSN :
01689002
Volume :
554
Database :
OpenAIRE
Journal :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Accession number :
edsair.doi...........6245806ce63f9a46ae9f9cde2535419c