At HRIBF, Oak Ridge, the proposal RIB-112: Measurement of the 2+ state of 132Te produced as radioactive beam was approved and a test experiment was performed in July 2004. A summary of the experiment is provided here . With the lessons learned, a new chamber was installed and the experiment rescheduled for spring 2007. The radioactive beam could not be delivered as scheduled and instead the new setup was tested with stable 130Te. The results of this test are summarized.
The findings were:
Experiment from June 22. to July 3. 2007
Two different targets were used;
1.3 mg/cm2 C on 4.9 mg/cm2 Gd
backed by 0.8 mg/cm2 of Cu (added solely to improve thermal conductivity)
and
1 mg/cm2 C on 4.4 mg/cm2 Fe.
Both targets were cooled to 77 K with liquid nitrogen.
The coincidence rate was at best 1 every 18 seconds per
Clover detector for a total of about 700 counts per Clover and field
direction.
The data are still being analyzed but the preliminary result g(2+) = +0.3(0.17) is in agreement with Ref. [1]. An important part of this experiment was the
determination of the sign of the g factor, which is as expected positive.
The success of this experiment provides a proof of principle and is a guide
for future measurements. A report can found in the HRIBF News Letter. The experiment was also reported at the DNP meeting of the APS in October 2007 in Newport News, VA (BAPS Vol. 52, No. 9 October 2007, DA47, HG7).
The final publication can be found in Phys. Lett. B664, 241-245 (2008)
The experiment: RIB-175 (126Sn) was successfully run in August 2011