Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength

Atar, L.; Paschalis, S.; Barbieri, C.; Bertulani, C.A.; Diaz Fernandez, P.; Holl, M.; Najafi, M.A.; Panin, V.; Alvarez-Pol, H.; Aumann, T.; Avdeichikov, V.; Beceiro-Novo, S.; Bemmerer, D.; Benlliure, J.; Boillos, J.M.; Boretzky, K.; Borge, M.J.G.; Caamano, M.; Caesar, C.; Casarejos, E.; Catford, W.; Cederkall, J.; Chartier, M.; Chulkov, L.; Cortina-Gil, D.; Cravo, E.; Crespo, R.; Dillmann, I.; Elekes, Z.; Enders, J.; Ershova, O.; Estrade, A.; Farinon, F.; Fraile, L.M.; Freer, M.; Galaviz Redondo, D.; Geissel, H.; Gernhauser, R.; Golubev, P.; Gobel, K.; Hagdahl, J.; Heftrich, T.; Heil, M.; Heine, M.; Heinz, A.; Henriques, A.; Hufnagel, A.; Ignatov, A.; Johansson, H.T.; Jonson, B.; Kahlbow, J.; Kalantar-Nayestanaki, N.; Kanungo, R.; Kelic-Heil, A.; Knyazev, A.; Kroll, T.; Kurz, N.; Labiche, M.; Langer, C.; Le Bleis, T.; Lemmon, R.; Lindberg, S.; Machado, J.; Marganiec-Galazka, J.; Movsesyan, A.; Nacher, E.; Nikolskii, E.Y.; Nilsson, T.; Nociforo, C.; Perea, A.; Petri, M.; Pietri, S.; Plag, R.; Reifarth, R.; Ribeiro, G.; Rigollet, C.; Rossi, D.M.; Roder, M.; Savran, D.; Scheit, H.; Simon, H.; Sorlin, O.; Syndikus, I.; Taylor, J.T.; Tengblad, O.; Thies, R.; Togano, Y.; Vandebrouck, M.; Velho, P.; Volkov, V.; Wagner, A.; Wamers, F.; Weick, H.; Wheldon, C.; Wilson, G.L.; Winfield, J.S.; Woods, P.; Yakorev, D.; Zhukov, M.; Zilges, A.; Zuber, K.

doi:10.1103/PhysRevLett.120.052501

Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the (RB)-B-3/LAND setup with incident beam energies in the range of 300-450 MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type O-A(p,2p)NA-1 have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.

Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength / L. Atar, S. Paschalis, C. Barbieri, C.A. Bertulani, P. Diaz Fernandez, M. Holl, M.A. Najafi, V. Panin, H. Alvarez-Pol, T. Aumann, V. Avdeichikov, S. Beceiro-Novo, D. Bemmerer, J. Benlliure, J.M. Boillos, K. Boretzky, M.J.G. Borge, M. Caamano, C. Caesar, E. Casarejos, W. Catford, J. Cederkall, M. Chartier, L. Chulkov, D. Cortina-Gil, E. Cravo, R. Crespo, I. Dillmann, Z. Elekes, J. Enders, O. Ershova, A. Estrade, F. Farinon, L.M. Fraile, M. Freer, D. Galaviz Redondo, H. Geissel, R. Gernhauser, P. Golubev, K. Gobel, J. Hagdahl, T. Heftrich, M. Heil, M. Heine, A. Heinz, A. Henriques, A. Hufnagel, A. Ignatov, H.T. Johansson, B. Jonson, J. Kahlbow, N. Kalantar-Nayestanaki, R. Kanungo, A. Kelic-Heil, A. Knyazev, T. Kroll, N. Kurz, M. Labiche, C. Langer, T. Le Bleis, R. Lemmon, S. Lindberg, J. Machado, J. Marganiec-Galazka, A. Movsesyan, E. Nacher, E.Y. Nikolskii, T. Nilsson, C. Nociforo, A. Perea, M. Petri, S. Pietri, R. Plag, R. Reifarth, G. Ribeiro, C. Rigollet, D.M. Rossi, M. Roder, D. Savran, H. Scheit, H. Simon, O. Sorlin, I. Syndikus, J.T. Taylor, O. Tengblad, R. Thies, Y. Togano, M. Vandebrouck, P. Velho, V. Volkov, A. Wagner, F. Wamers, H. Weick, C. Wheldon, G.L. Wilson, J.S. Winfield, P. Woods, D. Yakorev, M. Zhukov, A. Zilges, K. Zuber. - In: PHYSICAL REVIEW LETTERS. - ISSN 1092-0145. - 120:5(2018), pp. 052501.1-052501.7.

Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength

Atar L.;Paschalis S.;C. Barbieri;Bertulani C. A.;Diaz Fernandez P.;Holl M.;Najafi M. A.;Panin V.;Alvarez-Pol H.;Aumann T.;Avdeichikov V.;Beceiro-Novo S.;Bemmerer D.;Benlliure J.;Boillos J. M.;Boretzky K.;Borge M. J. G.;Caamano M.;Caesar C.;Casarejos E.;Catford W.;Cederkall J.;Chartier M.;Chulkov L.;Cortina-Gil D.;Cravo E.;Crespo R.;Dillmann I.;Elekes Z.;Enders J.;Ershova O.;Estrade A.;Farinon F.;Fraile L. M.;Freer M.;Galaviz Redondo D.;Geissel H.;Gernhauser R.;Golubev P.;Gobel K.;Hagdahl J.;Heftrich T.;Heil M.;Heine M.;Heinz A.;Henriques A.;Hufnagel A.;Ignatov A.;Johansson H. T.;Jonson B.;Kahlbow J.;Kalantar-Nayestanaki N.;Kanungo R.;Kelic-Heil A.;Knyazev A.;Kroll T.;Kurz N.;Labiche M.;Langer C.;Le Bleis T.;Lemmon R.;Lindberg S.;Machado J.;Marganiec-Galazka J.;Movsesyan A.;Nacher E.;Nikolskii E. Y.;Nilsson T.;Nociforo C.;Perea A.;Petri M.;Pietri S.;Plag R.;Reifarth R.;Ribeiro G.;Rigollet C.;Rossi D. M.;Roder M.;Savran D.;Scheit H.;Simon H.;Sorlin O.;Syndikus I.;Taylor J. T.;Tengblad O.;Thies R.;Togano Y.;Vandebrouck M.;Velho P.;Volkov V.;Wagner A.;Wamers F.;Weick H.;Wheldon C.;Wilson G. L.;Winfield J. S.;Woods P.;Yakorev D.;Zhukov M.;Zilges A.;Zuber K.

2018

Abstract

Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the (RB)-B-3/LAND setup with incident beam energies in the range of 300-450 MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type O-A(p,2p)NA-1 have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.

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	Parole chiave
	
				nuclear; knockout; model
			
	Settori scientifico-disciplinari dell'articolo (sola visualizzazione)
	
				Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				2018
			
	Rivista in ANCE
	
				PHYSICAL REVIEW LETTERS
			
	DOI
	
				https://dx.doi.org/10.1103/PhysRevLett.120.052501
			
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				Article (author)
			
	Appare nelle tipologie:
	
				01 - Articolo su periodico

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/709810

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