Spectroscopy of the Unbound Nucleus <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi>N</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>11</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> by the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mrow><mmultiscripts><mrow><mi>N</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>14</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mrow><mmultiscripts><mrow><mo>,</mo><mi>C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>15</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>)</mo><mrow><mmultiscripts><mrow><mi>N</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>11</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Transfer Reaction

A. Lépine-Szily; J. M. Oliveira, Jr; A. N. Ostrowski; H. G. Bohlen; R. Lichtenthaler; A. Blazevic; C. Borcea; V. Guimarães; R. Kalpakchieva; V. Lapoux; M. MacCormick; F. Oliveira; W. von Oertzen; N. A. Orr; P. Roussel-Chomaz; Th. Stolla; J. S. Winfield

doi:10.1103/PhysRevLett.80.1601

Spectroscopy of the Unbound Nucleus ${}^{11}N$ by the ${}^{12}C ({}^{14}N {}^{15}{, C}) {}^{11}N$ Transfer Reaction

A. Lépine-Szily, J. M. Oliveira, Jr., A. N. Ostrowski, H. G. Bohlen, R. Lichtenthaler, A. Blazevic, C. Borcea, V. Guimarães, R. Kalpakchieva, V. Lapoux, M. MacCormick, F. Oliveira, W. von Oertzen, N. A. Orr, P. Roussel-Chomaz, Th. Stolla, and J. S. Winfield

Phys. Rev. Lett. 80, 1601 – Published 23 February 1998

Abstract

A spectroscopic study of the proton-rich, particle unstable nucleus $^{11} N$ has been performed using the multinucleon transfer reaction $^{12} C (^{14} N,^{15} C)^{11} N$ at $30 A MeV$ incident energy at GANIL. Levels of $^{11} N$ are observed as well defined resonances in the spectrum of the $^{15} C$ ejectiles. They are localized at 2.18(5), 3.63(5), 4.39(5), 5.12(8), and 5.87(15) MeV above the $^{10} C + p$ threshold. The comparison of the measured widths with $R$ -matrix calculations allows the estimation of spins and parities for these resonances.

Received 19 September 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.1601

Authors & Affiliations

A. Lépine-Szily¹, J. M. Oliveira, Jr.^1,2, A. N. Ostrowski³, H. G. Bohlen⁴, R. Lichtenthaler¹, A. Blazevic⁴, C. Borcea⁵, V. Guimarães⁶, R. Kalpakchieva⁷, V. Lapoux⁸, M. MacCormick⁹, F. Oliveira⁹, W. von Oertzen⁴, N. A. Orr¹⁰, P. Roussel-Chomaz⁹, Th. Stolla⁴, and J. S. Winfield¹⁰

¹IFUSP-Universidade de São Paulo, CP 66318, 05315-970 São Paulo, Brazil
²Departamento de Ciências e Matemática, Universidade de Sorocaba, Sorocaba, Brazil
³Department of Physics & Astronomy, University of Edinburgh, Edinburgh, EH9 3JZ United Kingdom
⁴Hahn-Meitner-Institut, Glienicker Strasse 100, D-14109 Berlin, Germany
⁵Institute of Atomic Physics, Bucarest, Romania
⁶UNIP-Objetivo, Rua Dr. Bacelar 1212, 04026-002, São Paulo, Brazil
⁷Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980 Dubna, Russia
⁸CEA/DSM/DAPNIA/SPhN, CEN Saclay, 91191 Gif-sur-Yvette, France
⁹GANIL, Boulevard Henri Becquerel, BP 5027, 14021 Caen Cedex, France
¹⁰LPC-ISMRa, Boulevard du Maréchal Juin, 14050 Caen Cedex, France