Experimental study of the nature of the 1− and 2− excited states in Be10 using the Be11(p,d) reaction in inverse kinematics
| Autor: | K. Kuhn, A. B. Garnsworthy, Paul Thompson, S. T. Pittman, Corina Andreoiu, B. A. Brown, M. A. G. Alvarez, R. Braid, S. V. Ilyushkin, C. Unsworth, P. C. Bender, W. N. Catford, C. E. Svensson, A. DiPietro, V. Pesudo, J. Gómez-Camacho, Filomena Nunes, C. Aa. Diget, Enrique Nácher, F. Sarazin, D. W. Bardayan, J. C. Blackmon, Olof Tengblad, Ángel Perea, D. Smalley, T.E. Drake, Patrick O'Malley, P. Figuera, Z. M. Wang, U. Hager, G. Hackman, M. J. G. Borge |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Physical Review C. 104 |
| ISSN: | 2469-9993 2469-9985 |
| Popis: | The nature of the 1 − and 2 − excited states in Be 10 is studied using the Be 11 ( p , d ) transfer reaction in inverse kinematics at 10A MeV at TRIUMF ISAC-II, in particular to assess whether either of them can be considered as an excited halo state. The angular distributions for both states are extracted using deuteron- γ coincidences and analyzed using a transfer model taking into account one-step and two-step processes. A good fit of the angular distributions is obtained considering only the one-step process, whereby an inner p 3 / 2 neutron of Be 11 is removed, leaving the halo neutron intact. Higher-order processes however cannot be rejected. The small spectroscopic factors extracted suggest that the structure of both states is not uniquely halo-like, but rather display a more complex configuration mixing cluster and halo structures. Further insights are limited, as this experiment specifically probed the halo-like (but not cluster-like) Be 11 ( 1 / 2 + ) ⊗ ( ν p 3 / 2 ) − 1 configuration in both states. |
| Databáze: | OpenAIRE |
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