New segmented target for studies of neutron unbound systems

Redpath, T.; Baumann, T.; Brown, J.; Chrisman, D.; DeYoung, P. A.; Frank, N.; Guèye, P.; Kuchera, A. N.; Liu, H.; Persch, C.; Stephenson, S.; Stiefel, K.; Thoennessen, M.; Votaw, D.

doi:10.1016/j.nima.2020.164284

New segmented target for studies of neutron unbound systems

Journal Article · Mon Jun 29 00:00:00 EDT 2020 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2020.164284· OSTI ID:1850354

Redpath, T. ^[1]; Baumann, T. ^[2]; Brown, J. ^[3]; Chrisman, D. ^[4]; DeYoung, P. A. ^[5]; Frank, N. ^[6]; Guèye, P. ^[4]; Kuchera, A. N. ^[7]; Liu, H. ^[4]; Persch, C. ^[5]; Stephenson, S. ^[8]; Stiefel, K. ^[9]; Thoennessen, M. ^[4]; Votaw, D. ^[4]

Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy; Michigan State Univ., East Lansing, MI (United States)
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab
Wabash College, Crawfordsville, IN (United States). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
Hope College, Holland, MI (United States). Dept. of Physics
Augustana College, Rock Island, IL (United States). Dept. of Physics and Astronomy
Davidson College, NC (United States). Dept. of Physics
Gettysburg College, Gettysburg, PA (United States). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab; Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry

The study of neutron-unbound systems using invariant mass spectroscopy is often performed using low-intensity radioactive ion beams. Low reaction yields can be countered by using thick targets but at the expense of larger uncertainties in the reconstructed invariant mass. In this work, we present a new segmented target designed to address this trade-off. It is composed of three mm thick passive beryllium targets interleaved between four thick position sensitive silicon detectors. In the first experiment to use this new system the half-life of two-neutron unbound was measured to be (stat) (syst) ps, which agrees with a previous measurement made by the MoNA Collaboration.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of California, Oakland, CA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003180

OSTI ID:: 1850354

Alternate ID(s):: OSTI ID: 1776926

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 977; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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New segmented target for studies of neutron unbound systems

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