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No abstract available

[en] In order to improve the measuring efficiency, a 'proton-gamma' coincidence technique in combination with a He-jet tape transport system was proposed and employed to identify the β-delayed proton precursors. The study of β-delayed proton decays near the proton drip line by using the 'proton-gamma' coincidence technique over the last 5 years at the Institute of Modern Physics, Lanzhou, China, was summarized. New β-delayed proton precursors ¹²¹Ce, ¹²⁵Nd, ¹²⁸Pm, ¹²⁹Sm, ¹³⁵Gd, ¹³⁷Gd, ¹³⁹Dy, ¹⁴²Ho, and ¹⁴⁹Yb in the rare-earth region along a speculated proton drip line were synthesized and identified for the first time. The β-delayed proton decays of ⁸¹Zr, ⁸⁵Mo, ⁸⁹Ru, and ⁹³Pd in T_z=1/2 series as well as ⁹²Rh in T_z=1 series were observed

[en] The 2000 Nuclear Data Sheets for A = 121 by T. Tamura, with literature cutoff date of July 1,1999 has been updated. The experimental results from various decays and reactions for A=121 mass chain have been compiled and evaluated. The nuclides covered in this evaluation are from ¹²¹Rh to ¹²¹Pr. The data are summarized and presented, together with adopted level schemes.