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Spectroscopy of proton-unbound nuclei by tracking their decay products in-flight: One- and two- proton decays of F15, Ne16, and Na19

Mukha, I, Sümmerer, K, Acosta, L, Alvarez, MAG, Casarejos, E, Chatillon, A, Cortina-Gil, D, Egorova, IA, Espino, JM, Fomichev, A , García-Ramos, JE, Geissel, H, Gómez-Camacho, J, Grigorenko, L, Hofmann, J, Kiselev, O, Korsheninnikov, A, Kurz, N, Litvinov, YA, Litvinova, E, Martel, I, Nociforo, C, Ott, W, Pfützner, M, Rodríguez-Tajes, C, Roeckl, E, Stanoiu, M, Timofeyuk, Natalia, Weick, H and Woods, PJ (2010) Spectroscopy of proton-unbound nuclei by tracking their decay products in-flight: One- and two- proton decays of F15, Ne16, and Na19 Physical Review C - Nuclear Physics, 82 (5), 054315. pp. 1-14.

PhysRevC.79.061301.pdf - Version of Record

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A powerful method of investigating proton-unbound nuclear states by tracking their decay products in flight is discussed in detail. To verify the method, four known levels in 15 F , 16 Ne , and 19 Na were investigated by measuring the angular correlations between protons and the respective heavy-ion fragments stemming from the precursor decays in flight. The parent nuclei of interest were produced in nuclear reactions of one-neutron removal from 17 Ne and 20 Mg projectiles at energies of 410–450 A MeV. The trajectories of the respective decay products, 14 O   +  p  +  p and 18 Ne   +  p  +  p, were measured by applying a tracking technique with microstrip detectors. These data were used to reconstruct the angular correlations of the fragments, which provided information on energies and widths of the parent states. In addition for reproducing properties of known states, evidence for hitherto unknown excited states in 15 F and 16 Ne was found. This tracking technique has an advantage in studies of exotic nuclei beyond the proton drip line measuring the resonance energies and widths with a high precision although by using low-intensity beams and very thick targets.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Mukha, I
Sümmerer, K
Acosta, L
Alvarez, MAG
Casarejos, E
Chatillon, A
Cortina-Gil, D
Egorova, IA
Espino, JM
Fomichev, A
García-Ramos, JE
Geissel, H
Gómez-Camacho, J
Grigorenko, L
Hofmann, J
Kiselev, O
Korsheninnikov, A
Kurz, N
Litvinov, YA
Litvinova, E
Martel, I
Nociforo, C
Ott, W
Pfützner, M
Rodríguez-Tajes, C
Roeckl, E
Stanoiu, M
Weick, H
Woods, PJ
Date : 29 November 2010
DOI : 10.1103/PhysRevC.82.054315
Copyright Disclaimer : © 2010 American Physical Society
Depositing User : Symplectic Elements
Date Deposited : 26 Nov 2013 12:07
Last Modified : 06 Jul 2019 05:13

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