Center for Quantum Electronics

University of Texas at Dallas

In a collaboration with University of Osaka Faculty, the UTD team together with University of Orleans colleagues made an irradiation of a 178Hf isomer target at the Japanese synchrotron light source SPring8

View of UTD students aligning apparatus in the irradiation chamber. Beam enters through the brown rectangle.

Celebrating the completion of 48 hours of irradiation in Osaka

A Second Irradiation was conducted to confirm and extend observations

Increased target activity Multiple detectors Grazing incidence Twice the flux of irradiation, Provided for increased data collection rates, with greater energy resolution at the target.

Although considerably more challenging, system integration was accomplished in time for ...

A day off to visit the feudal castle at Himeji,

were facilitated by the introduction of a Ge detector channel providing about 1/12 th of the data for observation in real time in order to guide operational judgements. From that channel full confirmation was seen for the results presented at Telluride 2001. In particular:

• Improved sensitivity showed the onset of triggering to agree with the L_III edge and 2x flux gave 2x triggering. The previous indication of an offset was the result of insufficient statistics.
• The width of the "onset" still seemed to be the same as that of the peak of the L_III edge, ie 5 eV.
• The hybridized nuclear transitions for triggering were found at the same energies with 2x fluorescence yield.
• The different hybridized lines still lead to different decay cascades after triggering.

A significant part of a TeraByte of data collected invites future detailed understanding and exposition of these confirmations as analyses proceed.