Magnetic response of the halo nucleus $^{19}$C studied via lifetime measurement - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2015

Magnetic response of the halo nucleus $^{19}$C studied via lifetime measurement

K. Whitmore
  • Function : Author
D. Smalley
  • Function : Author
H. Iwasaki
  • Function : Author
T. Suzuki
  • Function : Author
V. M. Bader
  • Function : Author
Dominique Bazin
  • Function : Author
J. S. Berryman
  • Function : Author
B. A. Brown
  • Function : Author
C. M. Campbell
  • Function : Author
P. Fallon
  • Function : Author
A. Gade
C. Langer
  • Function : Author
C. Loelius
  • Function : Author
A. O. Macchiavelli
  • Function : Author
C. Morse
  • Function : Author
T. Otsuka
  • Function : Author
J. Parker
  • Function : Author
F. Recchia
  • Function : Author
S. R. Stroberg
  • Function : Author
D. Weisshaar
K. Wimmer

Abstract

The first lifetime measurement used to study the magnetic response of halo nuclei is presented. The lifetime of the first excited state of the one-neutron halo nucleus 19C has been measured by two complementary Doppler-shift techniques with the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA). The B(M1; 3/2+ →1/2+g.s.) strength of 3.21(25)×10−3μ2 N determined for this decay represents a strongly hindered M1 transition among light nuclei. Shell-model calculations predict a strong hindrance due to the near-degeneracy of the s1/2 and d5/2 orbitals among neutron-rich carbon isotopes, while tensor corrections and loosely bound effects are necessary to account for the remaining strength.

Dates and versions

in2p3-01145813 , version 1 (27-04-2015)

Identifiers

Cite

K. Whitmore, D. Smalley, H. Iwasaki, T. Suzuki, V. M. Bader, et al.. Magnetic response of the halo nucleus $^{19}$C studied via lifetime measurement. Physical Review C, 2015, 91 (4), pp.041303(R). ⟨10.1103/PhysRevC.91.041303⟩. ⟨in2p3-01145813⟩
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