Nuclear Data Sheets for A = 246–266(even)

The new element 111

“…~4 of chain 2 and c~4 and ~5 of chain 3 are in excellent agreement with the literature values published in [10][11][12] for the isotopes 260105 (E~= 9.0-9.2 MeV, Tl/z = 1.52 s) and 2S6Lr (E~---8.3-8.6 MeV, T1/2=28 s). ~4 of chain 2 and c~4 and ~5 of chain 3 are in excellent agreement with the literature values published in [10][11][12] for the isotopes 260105 (E~= 9.0-9.2 MeV, Tl/z = 1.52 s) and 2S6Lr (E~---8.3-8.6 MeV, T1/2=28 s).…”

“…Although the first three members of the decay chain are not known so far, we hoped to observe with our improved separation and detection method a long and significant c~-decay chain down to the known nuclei 260105 [10,11] and ZS6Lr [12], Although the first three members of the decay chain are not known so far, we hoped to observe with our improved separation and detection method a long and significant c~-decay chain down to the known nuclei 260105 [10,11] and ZS6Lr [12],…”

Spectroscopy of very heavy elements

“…Important information from single-particle properties has been obtained by using transfer reactions [2]. Excited states up to I π 8 · in 256 Fm have been seen in the β decay of the isomeric 8 · state of 256 Es [3]. Coulomb excitation has been used to populate excited states of 248 Cm up to a 5.1 MeV 30 · state [3].…”

“…Excited states up to I π 8 · in 256 Fm have been seen in the β decay of the isomeric 8 · state of 256 Es [3]. Coulomb excitation has been used to populate excited states of 248 Cm up to a 5.1 MeV 30 · state [3].…”

Prediction of first level isomeric half-lives of some even-even actinides

“…In Table I we present these measured half-lives. The values in Table I are the recommended values given in the Nuclear Data Sheets [3][4][5][6][7][8] and in the Table of Isotopes [9]. factors are high, about 99%; the first includes six elements from Ra to Cf and the second includes five elements from Th to Cf.…”