# Spectroscopy of $^{9}$He, quasi-free scattering $^{6}$He+$^{4}$He

Abstract : Low lying states of the unbound $^{9}$He system were investigated by means of the (d,p) reaction. A cryogenic deuterium target was bombarded by a secondary $^{8}$He beam. Complete kinematics measurements were accomplished. The observed $^{9}$He states are broad and overlapping. Their spins and parities have been unambiguously determined. Data from a $^{6}$He($\alpha$,2$\alpha$)2n experiment have been analyzed in terms of a quasi-free scattering approach. A large effect of the 2n final state interaction on the internal $^{6}$He momentum distribution has been demonstrated.
Keywords :
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00157238
Contributor : Michel Lion <>
Submitted on : Monday, June 25, 2007 - 3:49:16 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:16 PM

### Citation

R. Wolski, M. S. Golovkov, L. V. Grigorenko, A. S. Fomichev, A. V. Gorshkow, et al.. Spectroscopy of $^{9}$He, quasi-free scattering $^{6}$He+$^{4}$He. TOURS 2006, Tours Symposium on Nuclear Physics VI, Sep 2006, Tours, France. pp.226-234, ⟨10.1063/1.2713522⟩. ⟨in2p3-00157238⟩

Record views