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利用HIRFL提供的50MeV/u~ (13)C束流轰击Be靶,通过RIBLL选择出丰中子放射性核~8He．利用透射法测量了~8He的去双中子截面和去四中子截面．利用Ogawa等人的理论结合原有~8He的反应总截面数据,得到~8He的核芯为~4He的结论．
The Be target was bombarded with a 50 MeV / u ~ (13) C beam provided by HIRFL, and the abundant neutron radioactive nucleus ~ 8 He was selected by RIBLL. The de-double neutron section and the de-four neutron section of ~ 8 He were measured by transmission method. Using the theory of Ogawa et al. Combined with the original ~ 8He reaction total cross-section data, a conclusion is drawn that the ~ 8He core is ~ 4He.