New structure information on 30Mg, 31Mg and 32Mg

  • H. Mach
  • L. M. Fraile
  • O. Tengblad
  • R. Boutami
  • C. Jollet
  • W. A. Płóciennik
  • D. T. Yordanov
  • M. Stanoiu
  • M. J. G. Borge
  • P. A. Butler
  • J. Cederkäll
  • Ph. Dessagne
  • B. Fogelberg
  • H. Fynbo
  • P. Hoff
  • A. Jokinen
  • A. Korgul
  • U. Köster
  • W. Kurcewicz
  • F. Marechal
  • T. Motobayashi
  • J. Mrazek
  • G. Neyens
  • T. Nilsson
  • S. Pedersen
  • A. Poves
  • B. Rubio
  • E. Ruchowska
  • the ISOLDE Collaboration
ENAM 2004

DOI: 10.1140/epjad/i2005-06-159-0

Cite this article as:
Mach, H., Fraile, L.M., Tengblad, O. et al. Eur. Phys. J. A (2005) 25(Suppl 1): 105. doi:10.1140/epjad/i2005-06-159-0
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Abstract.

The fast timing βγγ(t) method was applied to investigate the level lifetimes in 30,31,32Mg. Levels in Mg have been populated in β and β-delayed neutron emission of Na at the ISOLDE facility. From the γγ coincidences a number of new states have been identified and new level schemes were constructed for 30,31,32Mg. The following preliminary half lives have been determined: T1/2 = 3.9(4) ns for the 1789 keV state in 30Mg, T1/2 = 133(8) ps and 10.5(8) ns for the 221 keV and 461 keV states in 31Mg, respectively, and T1/2 = 16(4) ps for the 885 keV level in 32Mg. The 1789 keV level was established as a candidate for the intruder 0+ configuration in 30Mg with a possible strong E0 branch to the ground state.

PACS.

21.10.Tg Lifetimes 23.20.Lv γ transitions and level energies 27.30.+t 20 ⩽ A ⩽ 38 

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • H. Mach
    • 1
  • L. M. Fraile
    • 2
    • 3
  • O. Tengblad
    • 4
  • R. Boutami
    • 4
  • C. Jollet
    • 5
  • W. A. Płóciennik
    • 6
  • D. T. Yordanov
    • 7
  • M. Stanoiu
    • 8
  • M. J. G. Borge
    • 4
  • P. A. Butler
    • 2
    • 9
  • J. Cederkäll
    • 2
    • 10
  • Ph. Dessagne
    • 5
  • B. Fogelberg
    • 1
  • H. Fynbo
    • 11
  • P. Hoff
    • 12
  • A. Jokinen
    • 13
  • A. Korgul
    • 14
  • U. Köster
    • 2
  • W. Kurcewicz
    • 14
  • F. Marechal
    • 5
  • T. Motobayashi
    • 15
  • J. Mrazek
    • 16
  • G. Neyens
    • 7
  • T. Nilsson
    • 2
  • S. Pedersen
    • 11
  • A. Poves
    • 17
  • B. Rubio
    • 18
  • E. Ruchowska
    • 6
  • the ISOLDE Collaboration
    • 1
  1. 1.Department of Radiation SciencesUppsala UniversityNyköpingSweden
  2. 2.ISOLDE, Division EPCERNGenevaSwitzerland
  3. 3.Universidad ComplutenseMadridSpain
  4. 4.Instituto de Estructura de la MateriaCSICMadridSpain
  5. 5.Institut de Recherches SubatomiquesIN2P3-CNRSStrasbourg, Cedex 2France
  6. 6.The Andrzej Sołtan Institute for Nuclear StudiesŚwierkPoland
  7. 7.K.U. LeuvenIKSLeuvenBelgium
  8. 8.IPNIN2P3-CNRS and Université Paris-SudOrsay CedexFrance
  9. 9.Oliver Lodge LaboratoryUniversity of LiverpoolLiverpoolUnited Kingdom
  10. 10.Department of PhysicsLund UniversityLundSweden
  11. 11.Institut for Fysik og AstronomiAarhus UniversitetAarhus CDenmark
  12. 12.Department of ChemistryUniversity of OsloOsloNorway
  13. 13.Department of PhysicsUniversity of JyväskyläFinland
  14. 14.Institute of Experimental PhysicsWarsaw UniversityWarsawPoland
  15. 15.RIKENWako, SaitamaJapan
  16. 16.Nuclear Physics InstituteRezCzech Republic
  17. 17.Departamento de Fısica Teórica C-XIUniversidad Autónoma de MadridMadridSpain
  18. 18.Instituto de Fısica CorpuscularCSIC University of ValenciaValenciaSpain

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