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HK: Fachverband Physik der Hadronen und Kerne
HK 50: Structure and Dynamics of Nuclei VIII
HK 50.4: Talk
Wednesday, March 30, 2022, 17:00–17:15, HK-H6
One-nucleon removal from 14O at 100 MeV/nucleon with a thin hydrogen target — •Thomas Pohl, Yelei Sun, Alexandre Obertelli, and SAMURAI 31 Collaboration — TU Darmstadt
Direct reactions at intermediate energies are an important tool for nuclear structure studies, but some reaction mechanisms are still not understood. One debated phenomenon is the asymmetric parallel momentum distribution (PMD) of the residual nucleus occuring occasional in one nucleon removal reactions[1-3]. Recent theoretical calculation of (p,pN) reactions with 14O at 100 MeV/nucleon with the distorted-wave impulse approximation (DWIA) predicted a large asymmetric PMD [4]. The low momentum tail is due to the attractive potential between the residues and the outgoing nucleons and the steep falloff on the high momentum side is due to the energy and momentum conservation. Still, comparison with experimental data is necessary for validation and will be a basis for further spectroscopic factor studies. We have performed 14O(p,pn)13O and 14O(p,2p)13N reactions at 100 MeV/nucleon with a thin solid hydrogen target at SAMURAI at RIKEN. Momentum of the residues were extracted from the SAMURAI spectrometer. Details of the data analysis and preliminary results of the cross section and PMD will be presented.
[1] A. Gade et al., Phys. Rev. C 71, 051301(R)(2005).
[2] K.L. Yurkewicz et al., Phys. Rev. C 74, 024304 (2006).
[3] F. Flavigny et al., Phys. Rev. Lett. 108, 252501 (2012).
[4] K. Ogata et al., J. Phys. Rev. C 92, 034616 (2015).