Search for the α +⁶He decay of¹⁰Be via the¹⁶O(¹⁸O,¹⁰Be*)²⁴Mg reaction

Abstract

A search for the α + 6 He decay of 10 Be has been performed using the Li 2 O( 18 O,α 6 He) reaction at 80 and 100 MeV. An array of two Si-Si-CsI telescopes was used for the coincident detection of the breakup fragments. No evidence for the 16 O( 18 O,α 6 He) 24 Mg reaction was obtained, the cross-section being determined as σ < 1.9 μb and <3.9 μb at 80 and 100 MeV, respectively. The α + 15 N decay of 19 F was observed via the 7 Li( 18 O,α 15 N) 6 He reaction. For the 19 F excitation energy and centre-of-mass scattering angle ranges covered, the cross-sections are σ = (31.7 ± 6.6) μb at 80 MeV and (31.8 ± 6.6) μb at 100 MeV.

B10+αstates with chain-like structures inN14Kanada-En’yo1 2015Phys. Rev. C4110View full textAdd to dashboardCite

“…For cluster states having an α cluster around a core nucleus, well-known examples are 16 O+α states in 20 Ne and 12 C+α states in 16 O [6]. Recent experimental and theoretical studies have revealed many cluster resonances in highly excited states near the α-decay threshold also in unstable nuclei, for instance, A−4 He+α states in Be isotopes [1,4,[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26], 10 Be+α states in 14 C [27][28][29][30]54], 14 C+α states in 18 O and their mirror states [31][32][33][34][35][36][37][38][39][40], 18 O+α states in 22 Ne [38]…”