Comparison of electromagnetic and nuclear dissociation of Ne-17

Wamers F.; Marganiec J.; Aksouh F.; Aksyutina Yu.; Alvarez-Pol H.; Aumann T.; Beceiro-Novo S.; Bertulani C. A.; Boretzky K.; Borge M. J. G.; Chartier M.; Chatillon A.; Chulkov L. V.; Cortina-Gil D.; Emling H.; Ershova O.; Fraile L. M.; Fynbo H. O. U.; Galaviz D.; Geissel H.; Heil M.; Hoffmann D. H. H.; Hoffman J.; Johansson H. T.; Jonson B.; Karagiannis C.; Kiselev O. A.; Kratz J. V.; Kulessa R.; Kurz N.; Langer C.; Lantz M.; Le Bleis T.; Lehr C.; Lemmon R.; Litvinov Yu. A.; Mahata K.; Muentz C.; Nilsson T.; Nociforo C.; Ott W.; Panin V.; Paschalis S.; Perea A.; Plag R.; Reifarth R.; Richter A.; Riisager K.; Rodriguez-Tajes C.; Rossi D.; Savran D.; Schrieder G.; Simon H.; Stroth J.; Suemmerer K.; Tengblad O.; Typel S.; Weick H.; Wiescher M.; Wimmer C.

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Comparison of electromagnetic and nuclear dissociation of Ne-17

机译：NE-17电磁与核离解的比较

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The Borromean drip-line nucleus Ne-17 has been suggested to possess a two-proton halo structure in its ground state. In the astrophysical rp-process, where the two-proton capture reaction O-15(2p,gamma) Ne-17 plays an important role, the calculated reaction rate differs by several orders of magnitude between different theoretical approaches. To add to the understanding of the Ne-17 structure we have studied nuclear and electromagnetic dissociation. A 500 MeV/u Ne-17 beam was directed toward lead, carbon, and polyethylene targets. Oxygen isotopes in the final state were measured in coincidence with one or two protons. Different reaction branches in the dissociation of Ne-17 were disentangled. The relative populations of s and d states in F-16 were determined for light and heavy targets. The differential cross section for electromagnetic dissociation (EMD) shows a continuous internal energy spectrum in the three-body system O-15 + 2p. The Ne-17 EMD data were compared to current theoretical models. None of them, however, yields satisfactory agreement with the experimental data presented here. These new data may facilitate future development of adequate models for description of the fragmentation process.

机译：已经提出了Borromean Drip-Line Nucleus Ne-17在其地位上具有两个质子光环结构。在天体物理RP-过程中，其中两种质子捕获反应O-15（2P，γ）NE-17起着重要作用，计算的反应速率在不同理论方法之间的几个数量级不同。为了加入对NE-17结构的理解，我们研究了核和电磁解离。 500 MeV / U Ne-17光束针对铅，碳和聚乙烯靶标。最终状态下的氧同位素以一两种质子吻合。 NE-17解离的不同反应分支被解开。测定F-16中的S和D状态的相对群体用于轻盈和重靶。用于电磁解离（EMD）的差分横截面显示了三体系S-15 + 2P中的连续内部能谱。将NE-17 EMD数据与当前理论模型进行比较。然而，它们都不是与此处呈现的实验数据产生令人满意的协议。这些新数据可以促进未来开发适当的模型，以描述碎片过程。

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《Physical review, C》 |2018年第3期|共8页
作者
Wamers F.; Marganiec J.; Aksouh F.; Aksyutina Yu.; Alvarez-Pol H.; Aumann T.; Beceiro-Novo S.; Bertulani C. A.; Boretzky K.; Borge M. J. G.; Chartier M.; Chatillon A.; Chulkov L. V.; Cortina-Gil D.; Emling H.; Ershova O.; Fraile L. M.; Fynbo H. O. U.; Galaviz D.; Geissel H.; Heil M.; Hoffmann D. H. H.; Hoffman J.; Johansson H. T.; Jonson B.; Karagiannis C.; Kiselev O. A.; Kratz J. V.; Kulessa R.; Kurz N.; Langer C.; Lantz M.; Le Bleis T.; Lehr C.; Lemmon R.; Litvinov Yu. A.; Mahata K.; Muentz C.; Nilsson T.; Nociforo C.; Ott W.; Panin V.; Paschalis S.; Perea A.; Plag R.; Reifarth R.; Richter A.; Riisager K.; Rodriguez-Tajes C.; Rossi D.; Savran D.; Schrieder G.; Simon H.; Stroth J.; Suemmerer K.; Tengblad O.; Typel S.; Weick H.; Wiescher M.; Wimmer C.;
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GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Univ Santiago de Compostela Dept Fis Particulas ES-15782 Santiago De Compostela Spain;

Texas A&

M Univ Dept Phys &

Astron Commerce TX 75429 USA;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

CSIC Inst Estruct Mat ES-28006 Madrid Spain;

Univ Liverpool Dept Phys Liverpool L69 3BX Merseyside England;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Univ Santiago de Compostela Santiago De Compostela 15782 Spain;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Univ Complutense Madrid Dept Atom Mol &

Nucl Phys ES-28040 Madrid Spain;

Univ Aarhus Dept Phys &

Astron DK-8000 Aarhus Denmark;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Chalmers Tekn Hgsk Fys Inst SE-41296 Gothenburg Sweden;

Chalmers Tekn Hgsk Fys Inst SE-41296 Gothenburg Sweden;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Johannes Gutenberg Univ Mainz Inst Kernchem D-55122 Mainz Germany;

Uniwersytet Jagellonski Inst Fis PL-30059 Krakow Poland;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Uppsala Univ Inst Fys Astron SE-75120 Uppsala Sweden;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

STFC Daresbury Lab Nucl Phys Grp Warrington WA4 4AD Cheshire England;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Univ York Dept Phys York YO10 5DD N Yorkshire England;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Inst Kernphys Tech Univ D-64289 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

EMMI ExtreMe Matter Inst D-64291 Darmstadt Germany;

Inst Kernphys Tech Univ D-64289 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

Univ Notre Dame JINA Indiana PA 46556 USA;

GSI Helmholtzzentrum Schwerionenforsch GmbH D-64291 Darmstadt Germany;

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中图分类原子核物理学、高能物理学;
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机译：NE17电磁与核离析的比较

Comparison of electromagnetic and nuclear dissociation of Ne-17

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