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USNDP

10He (1984AJ01)


(Not illustrated)

10He has not been observed in the bombardment of 232Th by 4.8 GeV/c deuterons [the production cross section is ≲ 2 μb] (1979BE60) nor in the interaction of 10B, 11B and 22Ne [8 to 10 MeV/A] with Ti and 232Th targets [the cross section is < 5 × 10-4 μb/sr] (1982OG02). See also (1974AJ01). The calculated value of the atomic mass excess of 10He is 49.40 MeV: 10He is then unstable with respect to breakup into 9He + n and 8He + 2n by 0.52 and 1.66 MeV, respectively (1980SE1F). See also (1979AJ01), (1980BO31, 1982BI1C) and (1979BO22, 1981AV02, 1981KI04, 1982AV1A, 1982NG01, 1982VE05; theor.).