Alpha-
decay studies of
No and its daughter products
Md,
Fm
No及び娘核種
Md,
Fmの
-
核分光
He
berger, F. P.*; Antalic, S.*; Ackermann, D.*; Kalaninov
, Z.*; Heinz, S.*; Hofmann, S.*; Streicher, B.*; Kindler, B.*; Kojouharov, I.*; Kuusiniemi, P.*; Leino, M.*; Lommel, B.*; Mann, R.*; 西尾 勝久
; 
ro,
.*; Sulignano, B.*; Venhart, M.*
He
berger, F. P.*; Antalic, S.*; Ackermann, D.*; Kalaninov
, Z.*; Heinz, S.*; Hofmann, S.*; Streicher, B.*; Kindler, B.*; Kojouharov, I.*; Kuusiniemi, P.*; Leino, M.*; Lommel, B.*; Mann, R.*; Nishio, Katsuhisa; 
ro,
.*; Sulignano, B.*; Venhart, M.*
Nuclear structure and decay of the isotope
No and its decay products
Fm and
Md were investigated by means of
-
spectroscopy. Besides the established strong
transitions from the 9/2
[734] Nilsson level in
Fm, populated predominantly by the
decay of
No, into the ground-state(gs) rotational band, a couple of weaker
lines were observed and placed into the
Fm level scheme. The transition from the 7/2
level in
Es, populated by the
decay of
Md, into the 9/2
member of the gs rotational band, so far established for other odd-mass Es isotopes, was observed clearly. The GEANT4 simulations were performed to investigate the influence of energy summing between
particles and conversion electrons (CE) on the shape of the
spectra at different implantation energies, leading to evidence for a weak
decay branch of
No into the gs of
Fm or the ground-state rotational band, respectively.