Recherche de l'isotope 19N par la réaction 10Be(11B, 2p)19N

doi:10.1016/0375-9474(74)90461-8

Nuclear Physics A

Volume 233, Issue 2, 18 November 1974, Pages 357-360

https://doi.org/10.1016/0375-9474(74)90461-8 Get rights and content

Abstract

The ¹⁰Be(¹¹B, 2p)¹⁹N reaction has been used to search for the ¹⁹N isotope. No evidence was found for delayed γ-rays from ¹⁹N(β⁻)¹⁹O. Delayed neutrons were observed with a half-life of 0.42 ± 0.04 s, which are tentatively assigned to the neutron emitting states in ¹⁹O fed by the β-decay of ¹⁹N. Analysis of the data implies allowed β-transitions to neutron emitting ¹⁹O states, and makes probable an assignment of even parity for the 3.945 MeV ¹⁹O state.

Références (9)

T.D. Thomas et al.
Phys. Lett.
(1968)
A.H. Wapstra et al.
Nucl. Data Tables
(1971)
F. Ajzenberg-Selove
Nucl. Phys.
(1972)
D.R. Goosman
Nucl. Instr.
(1974)

There are more references available in the full text version of this article.

Cited by (2)

Evaluation of Beta-Delayed Neutron Emission Probabilities and Half-Lives for Z = 2-28
2015, Nuclear Data Sheets
We present an evaluation and compilation of β-delayed neutron probabilities and half-lives for nuclei in the region Z = 2–28 (⁸He–⁸⁰Ni). This article includes the recommended values of these quantities as well as a compiled list of experimental measurements for each nucleus in the region for which β-delayed neutron emission is possible. The literature cut-off for this work is August 15^th, 2015. Some notable cases as well as new standards for β-delayed neutron measurements in this mass region are also discussed.
Étude de neutrons retardés de la réaction <sup>10</sup>Be+<sup>11</sup>B
1976, Nuclear Physics, Section A
The decay of delayed neutrons following the bombardment of a ¹⁰BeO target with 30–40 MeV ¹¹B ions exhibits half-life components consistent with the production of the known activities ⁹Li, ¹⁶C and ¹⁷N. A previous suggestion that ¹⁹N was formed in the ¹⁰Be(¹¹B, 2p)¹⁹N reaction and decayed with $T 12 ≈ 0.4$ s is therefore not confirmed. Evaporation-type calculations show a low cross section for the formation of ¹⁹N.

^†: Adresse permanente: Brookhaven National Laboratory, Upton, New York 11973, USA.

^††: Maintenant à: Lawrence Radiation Laboratory, Livermore, California, 94550, USA.

View full text

Recherche de l'isotope 19N par la réaction 10Be(11B, 2p)19N

Abstract

Phys. Lett.

Nucl. Data Tables

Nucl. Phys.

Nucl. Instr.

Recherche de l'isotope ¹⁹N par la réaction ¹⁰Be(¹¹B, 2p)¹⁹N