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Các nghiên cứu về tỷ lệ đồng phân trong các phản ứng hạt nhân ảnh hình thành đồng phân mạng cao trong miền cộng hưởng lưỡng cực lớn

The study of isomeric ratios in photo nuclear reactions forming high spin isomers in the giant dipole resonance region

Communication in Physics

2014

4

381-389

0868-3166

The authors studied the isomeric ratios in odd-odd nuclei 196Au, 182Ta and 194Ir with high spin isomeric states produced in 197 Au(y, n)196m/g,Au, 183W(y, p)182m,8Ta and 185 Pt(y, p)194m,8Ir reactions by using the activation technique and y-ray spectroscopic method in the giant dipole resonance (GDR) region. The high-purity naiural Au, W and Pt foils in disc shape were irradiated with bremsstrahlungs generated from an electron accelerator Microtron. The irradiated foils were measured by the high resolution y-ray spectroscopic system which consists of a Ge(HP) detector and a multichannel analyzer. In order to improve the accuracy of the experimental results, necessary corrections were made in the y-ray activity measurements and data analysis. The results were analyzed, discussed and compared with those of other authors as well as with theoretical model calculations. The study shows that the isomeric ratios in nuclei with high spin isomeric states are much lower than that in low spin isomeric state isomers.

TTKHCNQG, CLv 2393