Rutgers Nuclear Physics Group
TF Experiments at Berkeley and Yale

Magnetic moments of short lived (10-12 s range) excited nuclear states are measured using the Transient Fields,TF, which are observed when ions move at velocities of a few percent of the speed of light through ferromagnetic materials. In a nuclear reaction both the excited state and the high velocity probe ion are produced which can be the excited target nuclei or the beam projectiles themselves.

These experiments deal with Coulomb excitation of the projectiles at high energies.The projectiles are excited in collisions with light target nuclei. In this inverse kinematic condition all reaction products are focused in the forward direction. The de-excitation gamma rays of the probe ions are measured in coincidence with the light 'recoil' target ions observed in a particle detector around 0 deg. With the same target several isotopes of one element are studied and their magnetic moments compared.

Neodymium Isotopes

The first 2+ states in Nd isotopes were measured earlier at the Yale tandem.
At the 88" Cyclotron in Berkeley at energies of about 600 MeV the first 2+ and 4+ states were measured.

  1. 146,144Nd

    Jul. 1998  runs 57 to 77

  2. 144,148,150Nd

    Feb. 1999  runs 84 to 130
    Publication:
    Physics Letters B, Volume 493, Issues 1-2, 9 November 2000, Pages7-11

Krypton Isotopes

    78,80,82,84,86Kr

  1. Aug. 1999   runs 1 to 59
    Publication:
    Phys.Rev. C 64,024314 (2001)

    2. 76Kr

  2. In Aug. 2003 the radioactive Krypton isotope 76 was produced at the 88" cyclotron using the reaction 74Se(alpha,2n)76Kr, extracted, and in a procedure called re-cyclotron method accelerated to 230 MeV.
    Results were reported at the DNP meeting in Oct. 2003 in Tucson, Arizona.
    BAPSA6 Series II, Vol. 48,No.8 (BF 10, CF 3, 8P 28).
    Publication:
    Physics Letters B, Volume 591, Issues 3-4, 8 July 2004, Pages 213-219

Xenon Isotopes

    130,132,134,136Xe

  1. Feb. 2000   runs 1 to 50

    2. Publication:
    Phys.Rev.C 65,024316 (2002)

Calcium Isotopes

    46Ca

  1. In Aug. 2003 the g-factor of the rare 46Ca isotope was measured.

    2. Publication:
    Physics Letters B, Volume 605, Issues3-4, 13 January 2005, Pages 265-272
The 42,44Ca isotopes were measured earlier at Yale.

Titanium - 46

    46Ti

  1. In Dec. 2003 the known g-factor of the 46Ti isotope was remeasured with the target used for 46Ca to calibrate the field.

Argon - 40

    40Ar

  1. In Dec. 2003 the g-factor of the 40Ar was measured with the target used for 46Ca.

    Publication:
    Phys. Rev. C 72, 014309 (2005)

Since Jan. 2004 the cylotron lab was closed as user facility by the DOE.

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Gerfried Kumbartzki
Last modified: Tue Sep. 6 15:53:30 EDT 2005