g Factor Measurements of Even Ca Isotopes by Inverse Kinematics and the Transient Field Technique

Details g Factor Measurements of Even Ca Isotopes by Inverse Kinematics and the Transient Field Technique g Factor Measurements of Even Ca Isotopes by Inverse Kinematics and the Transient Field Technique

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apro10005t&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The magnetic moments of excited 2^+ states of even Ca isotopes can provide significant information regarding the shell model structure of low-lying levels in this mass region. The lifetimes of these states however are short (1.18 ps for ^42Ca) and therefore an acurate measurement of their g factors is difficult. The g factors for ^40Ca (3^- state) and ^44Ca (2^+ state) have been measured using the ``tilted foil'' technique [1] to an accuracy of approximately 40 % which indicates the difficulty of a precise measurement. A series of experiments have been performed at the Wright Nuclear Structure Laboratory at Yale to measure the g factor of the Coulomb excited 2^+ state in ^44Ca (τ = 3.76 ps). The latest experiment combined inverse kinematics with the transient field technique [2]. The aim of the experiment was two-fold. Firstly to measure the g factor of the 2^+ state to a greater degree of accuracy than the previous measurement [1] and secondly, to test the technique as a method for future measurements of states whose lifetimes are much shorter than a picosecond. The technique employed and preliminary results from this last experiment will be discussed. [1] Y. Niv et al., Phys. Rev. Lett. 43, 326 (1979). [2] N. Benczer-Koller et al., Ann. Rev. Nucl. Part. Sci. 30, 53 (1980).

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