New segmented target for studies of neutron unbound systems

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...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2020-06, Vol.977 (C)
Main Authors: 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.
Format: Article
Language:English
Subjects:
half-life
Instruments & Instrumentation
invariant mass spectroscopy
neutron drip line
NUCLEAR PHYSICS AND RADIATION PHYSICS
Nuclear Science & Technology
OTHER INSTRUMENTATION
Physics
radioactive ion beam
reaction yield
silicon detectors
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Summary: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.
ISSN:0168-9002
1872-9576