Inverse kinematics (p, n) reactions studies using the WINDS slow neutron detector and the SAMURAI spectrometer

Yasuda, J. and Sasano, M. and Zegers, R. G. T. and Baba, H. and Chao, W. and Stuhl, László and Krasznahorkay, Attila (2016) Inverse kinematics (p, n) reactions studies using the WINDS slow neutron detector and the SAMURAI spectrometer. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 376. pp. 393-396. ISSN 0168-583X

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We have combined the low-energy neutron detector WINDS (Wide-angle Inverse-kinematics Neutron Detectors for SHARAQ) and the SAMURAI spectrometer at RIKEN Nishina Center RI Beam Factory (RIBF) in order to perform (p,n) reactions in inverse kinematics for unstable nuclei in the mass region around A∼100. In this setup, WINDS is used for detecting recoil neutrons and the SAMURAI spectrometer is used for tagging decay channel of heavy residue. The first experiment by using the setup was performed to study Gamow-Teller transitions from 132Sn in April 2014. The atomic number Z and mass-to-charge ratio A/Q of the beam residues were determined from the measurements of time of flight, magnetic rigidity and energy loss. The obtained A/Q and Z resolutions were σA/Q=0.14% and σZ=0.22, respectively. Furthermore, owing to the large momentum acceptance (50%) of SAMURAI, the beam residues associated with the γ, 1n and 2n decay channel were measured in the same magnetic field setting. The kinematic loci of the measured recoil neutron energy and laboratory angle are clearly seen. It shows that the excitation energy up to about 20 MeV can be reconstructed. © 2016 Elsevier B.V.

Item Type: Article
Uncontrolled Keywords: Neutrons; RI beam factory; Momentum acceptances; Mass-to-charge ratio; Magnetic rigidity; Low-energy neutrons; ISOSPIN; GAMOW-TELLER TRANSITIONS; (p,n) reaction; wind; Spectrometers; Neutron detectors; KINEMATICS; Inverse kinematics; energy dissipation; Atoms; Spin isospin response; Neutron detector; Gamow-teller transition; (p, n) reaction
Subjects: Q Science / természettudomány > QC Physics / fizika
Depositing User: MTMT SWORD
Date Deposited: 20 Feb 2017 09:41
Last Modified: 20 Feb 2017 09:41

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