München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.31: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

One-nucleon removal from 14O at 100 MeV/nucleon with a thin hydrogen target — •Thomas Pohl, Yelei Sun, and Alexandre Obertelli — TU Darmstadt, Darmstadt, Germany

One-nucleon removal reactions at intermediate energies are an important tool for nuclear structure studies, but the reaction mechanism is still not fully understood. One unexplained phenomenon is the asymmetric parallel momentum distribution (PMD) of the residual nucleus observed in some occasions [1-3]. Recently, theoretical calculations with the distorted-wave impulse approximation (DWIA) have predicted a large asymmetric PMD for (p,pN) reactions of 14O [4]. The asymmetric shape of the PMD is found to be due to the phase volume effect and the attractive potential of the residues and the outgoing nucleons. Quantitative comparison with experimental data is essential to verify the predicted effects and establish a basis for further spectroscopic factor studies at medium energy facilities. Therefore we performed an experiment with 14O beam at 100 MeV/nucleon impinging on a 2-mm thick solid hydrogen target at RIBF at RIKEN. The momentum of the knockout residues were measured by the SAMURAI spectrometer. On the proposed poster, details of the experiment and the current status of the analysis will be presented.

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