Production of nuclei in neutron unbound states via primary fragmentation of 48Ca

Structure of Be13 studied in proton knockout from B14

“…The 12 Be relative velocities, measured in fragmentation of 40 MeV/nucleon 18 O [55] and 60 MeV/nucleon 48 Ca [56], give evidence for low-lying s-wave strength in 13 Be. However, this observation can also be explained as arising from the decay of the 14 Be(2 + ) state to 12 Be and two neutrons (see Fig.…”

Selective population of unbound states in 10Li

“…This placed the first measured unbound state at 0.8 ± 0.25 MeV decay energy [8]. The next measurement was made 15 years later [9] and since then, there have been many measurements of energies of the continuum structure of 10 Li [4,5,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]34].…”