Unisor on-line nuclear orientation facility

Abstract
The UNISOR on‐line nuclear orientation facility consists of a He3–He4 dilution refrigerator on line to the isotope separator. Nuclei are implanted directly onto a target foil soldered to the bottom accessed cold finger of the refrigerator. A 1.5 T superconducting magnet polarizes the ferromagnetic target foils and determines the axis of symmetry. Up to eight gamma detectors can be positioned around the refrigerator, each 9 cm from the target. A unique feature of this system is that the k=4 term in the directional distribution function can be deduced so that a single solution for the mixing ratio can be found.

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