Large Acceptance Spectrometers for Invariant Mass Spectroscopy of Exotic Nuclei and Future Development

Abstract

Large acceptance spectrometers at in-flight RI separators have played significant roles in investigating the structure of exotic nuclei. Such spectrometers are in particular useful for probing unbound states of exotic nuclei, using invariant mass spectroscopy with reactions at intermediate and high energies. We discuss here the key characteristic features of such spectrometers, by introducing the recently commissioned SAMURAI facility at the RIBF, RIKEN. We also explore the issue of cross talk in the detection of multiple neutrons, which has become crucial for exploring further unbound states and nuclei beyond the neutron drip line. Finally we discuss future perspectives for large acceptance spectrometers at the new-generation RI-beam facilities.

EMIS-2015 Conference Proceedings, submitted to NIMB

References in corpus (2)

• S$\pi$RIT: A time-projection chamber for symmetry-energy studies
• One-neutron knockout reaction of 17C on a hydrogen target at 70 MeV/nucleon

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• First observation of 20B and 21B
• Structure of 13Be probed via quasi-free scattering
• Single-neutron knockout from ${}^{20}\text{C}$ and the structure of ${}^{19}\text{C}$
• Searching for universality of dineutron correlation at the surface of Borromean nuclei
• Studies of the equation-of-state of nuclear matter by heavy-ion collisions at intermediate energy in the multi-messenger era
• Improving isotopic identification with \emph{INDRA} Silicon-CsI(\emph{Tl}) telescopes
• Border of the Island of Inversion: Unbound states in ${}^{29}$Ne
• Unbound states in 17C and p-sd shell-model interactions
• Spectroscopy of ${}^{52}$K
• Determination of energy-dependent neutron backgrounds using shadow bars
• Direct observation of three-neutron emission from ${}^7$He${}^{\ast }$ and the search for the trineutron
• Study of a possible silicon photomultiplier based readout of the large plastic scintillator neutron detector NeuLAND
• Low-energy neutron cross-talk between organic scintillator detectors