Beta-delayed proton emission from ²⁰Mg

Summary, in English

Beta-delayed proton emission from ²⁰ Mg has been measured at ISOLDE, CERN, with the ISOLDE Decay Station (IDS) setup including both charged-particle and gamma-ray detection capabilities. A total of 27 delayed proton branches were measured including seven so far unobserved. An updated decay scheme, including three new resonances above the proton separation energy in ²⁰ Na and more precise resonance energies, is presented. Beta-decay feeding to two resonances above the Isobaric Analogue State (IAS) in ²⁰ Na is observed. This may allow studies of the 4032.9(2.4)keV resonance in ¹⁹ Ne through the beta decay of ²⁰ Mg, which is important for the astrophysically relevant reaction ¹⁵O(α,γ)¹⁹Ne. Beta-delayed protons were used to obtain a more precise value for the half-life of ²⁰ Mg, 91.4(1.0)ms.

• Author: M. V. Lund; A. Andreyev; M. J G Borge; J. Cederkäll; H. De Witte; L. M. Fraile; H. O U Fynbo; P. T. Greenlees; L. J. Harkness-Brennan; A. M. Howard; M. Huyse; B. Jonson; D. S. Judson; O. S. Kirsebom; J. Konki; J. Kurcewicz; I. Lazarus; R. Lica; S. Lindberg; M. Madurga; N. Marginean; R. Marginean; I. Marroquin; C. Mihai; M. Munch; E. Nacher; A. Negret; T. Nilsson; R. D. Page; S. Pascu; A. Perea; V. Pucknell; P. Rahkila; E. Rapisarda; K. Riisager; F. Rotaru; C. Sotty; M. Stanoiu; O. Tengblad; A. Turturica; P. Van Duppen; V. Vedia; R. Wadsworth; N. Warr
• Department/s: Nuclear physics
• Publishing year: 2016-10-01
• Language: English
• Publication/Series: European Physical Journal A
• Volume: 52
• Issue: 10
• Links: http://dx.doi.org/10.1140/epja/i2016-16304-x
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6001