High resolution beam line for the Grand Raiden spectrometer

High-resolution study of Gamow-Teller excitations in theCa42(He3,t)Fujita1, Fujita2, Adachi3 et al. 2015Phys. Rev. C4291090View full textAdd to dashboardCite

“…The 42 Ca( 3 He, t) 42 Sc experiment was performed at the high-resolution facility of RCNP [26], consisting of the "WS course" beam line [27] and the "Grand Raiden" spectrometer [28] using a 140 MeV/nucleon 3 He beam from the K = 400 Ring Cyclotron [26]. The measurement was performed by setting the spectrometer at 0 • .…”

High-resolution study of theBe9(He3,Scholl1, Fujita2, Adachi3 et al. 2011Phys. Rev. C492220View full textAdd to dashboardCite

“…The beam was guided to the target through the WS beam line [4,5]. A target of metallic 9 Be (1.73 mg/cm 2 ) was used to study excited states in 9 B via the ( 3 He,t) reaction.…”

“…We performed a high energy resolution 9 Be( 3 He,t) 9 B experiment, in which precise beammatching techniques [4][5][6][7] were applied. As a result, an improvement in the energy resolution by one order of magnitude (∆E ≃30 keV) compared to the pioneering (p,n) experiments was realized.…”

“…The absolute values of the Fermi and Gamow-Teller unit cross-sections for the ( 3 He,t) reaction at 140 MeV/nucleon were studied across a wide range of nuclear masses [16]. As a result of these investigations, the empirical formulaê σ F = 72 · A −1.06 mb/sr (4) σ GT = 109 · A −0.65 mb/sr (5) have been shown to be a good approximation of the massnumber dependence of the unit cross-sections. The observed data points have a maximal deviation from the systematics of 5% forσ GT and 15% forσ F [16].…”

The first precision measurement of deeply bound pionic states in121Sn

“…We developed a new ion optical mode to apply the dispersion-matching method [15]. At RIBF, the momentum spread of the beam is about ±0.1% and it affects the resolution of the spectroscopy.…”