154HF    158W A DECAY (0.143 MS)       2000Ma95,1996PA01,1989HO1225NDS    202503
154HF  H TYP=FUL$AUT=N. NICA$CIT=NDS 200, 2 (2025)$CUT=22-Aug-2022$
154HF D   DATA SET UPDATED (FEBRUARY, 2007) BY CW REICH TO INCLUDE NEW T
154HF2D   VALUE, NEW QA VALUE AND NEW VALUE FOR E(8+). SOME INFORMATION WAS
154HF3D   ADDED (NOVEMBER, 2008) DURING THE RESPONSE TO THE REVIEWER'S
154HF4D   COMMENTS.
154HF c  Production: {+58}Ni bombardment of {+106}Cd using the velocity filter
154HF2c  SHIP (1989Ho12); 290-MeV {+58}Ni ions on isotopically enriched {+102}Pd
154HF3c  target at the Daresbury Recoil Mass Separator (1996Pa01). {+58}Ni
154HF4c  bombardment of {+102}Pd, involving mass separation (2000Ma95).
154HF dA HF$The nuclear radius parameter r{-0}({+154}Hf)=1.06 is deduced from
154HF2dA assumed HF=1.0 for the ground-state to ground-state alpha decay branch
158W   P   1888    8   (8+)            0.143 MS  19             6612.5    26
158W  DP E         COMPUTED BY THE EVALUATORS FROM THE DIFFERENCE IN QA VALUE
158W 2DP  FOR THE ISOMER (COMPUTED BY THE EVALUATORS FROM THE ENERGY OF THE
158W 3DP  DEEXCITING |a TRANSITION, CORRECTED FOR NUCLEAR RECOIL) AND THAT FOR
158W 4DP  THE 158W GS, ASSUMING THAT BOTH FEED THE 154HF G.S.
158W  DP J         THE (8+) ASSIGNMENT TO THE |a-EMITTING ISOMER IS BASED ON
158W 2DP  ANALOGY WITH A SUPPOSEDLY SIMILAR SITUATION IN 156HF. THE HINDRANCE
158W 3DP  FACTOR FOR THE IMPLIED RESULTING DL=8 |a TRANSITION IS CONSISTENT
158W 4DP  WITH THOSE IN SEVERAL NEAR-LYING NUCLIDES (1996Pa01).
158W  DP T         FROM 158W ADOPTED VALUES
158W  DP QP        FROM 2003Au03
158W  cP T$From 2017Ni05
158W  cP QP$From 2021Wa16
154HF  N                       1.0     AP
154HF cN BR$%|a|?100. Estimates of the half-life for ec decay indicate that |a
154HF2cN decay should be the dominant decay branch. 2021Ko07 list %|a=100.
154HF  L   0         0+                2 S       1
154HF cL T$from Adopted Levels
154HF  A 8286      7 100       1.0
154HF cA E$From 2000Ma95. Others: 8291~{I24} (1996Pa01); and 8280~{I30}
154HF2cA (1989Ho12). Note that a weighted average of these three leads to
154HF3cA essentially the same E|a value.