Nuclear Data Sheets for 183Hg

✍ Scribed by Coral M. Baglin

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 84 KB
• Volume: 91
• Category: Article
• ISSN: 0090-3752
• DOI: 10.1006/ndsh.2000.0015

✦ Synopsis

Hg 103 -1 NUCLEAR DATA SHEETS Adopted Levels, Gammas Q(β -)=-7580 SY; S(n)=8250 SY; S(p)=2690 SY; Q(α )=6039 4 1995Au04. ∆ Q(β -)=490, ∆ S(n)=550, ∆ S(p) =470 (1995Au04).

For isotope shift data see, e.g., 1972Bo09, 1976Bo09. Band structure is adopted from 155 Gd( 32 S,4nγ ) E=159 MeV (1995La10), with the addition of three 9/2[624] band transitions seen only by 1995Sh04. For the 1/2[521] band, however, the structure differs significantly from that deduced in 155 Gd( 32 S,4nγ ) E=160 MeV by 1995Sh04: the 67γ of 1995La10 is not seen by 1995Sh04 (possibly below their spectrum cutoff); an 89γ in 1995Sh04 is absent in 1995La10 (an 89γ from Coulomb excitation of 156 Gd could appear in sum-gate spectrum of 1995Sh04 if their target included 156 Gd); 1995La10 and 1995Sh04 each report three signature-partner linking transitions, none of which is seen by the other authors; structure above J=27/2 in the α =-1/2 partner differs in the two studies. Further measurements will be required to resolve these inconsistencies. 183 Hg Levels Cross Reference (XREF) Flags A 187 Pb α Decay (15.2 s) B 187 Pb α Decay (18.3 s) C 155 Gd( 32 S,4nγ ) E=159 MeV D 155 Gd( 32 S,4nγ ) E=160 MeV E 183 Tl ε Decay E(level) † J π ‡ XREF T 1/2 Comments . 0 § 1 / 2 -d A CDE 9 . 4 s 7 % ε +%β + =88.3 20; %α =11.7 20; %ε p=0.00026 6 . µ =+0.524 5 . 7 7 . 4 8 + x @ 2 5 1 7 / 2 -CD 9 0 . 5 # 4 ( 1 5 / 2 -) CD XREF: D(925). 9 5 . 3 § 5 1 7 / 2 -CD Continued on next page (footnotes at end of table) 1 2 0 18 8 3 0 Hg 103 -2 18 8 3 0 Hg 103 -2 NUCLEAR DATA SHEETS Adopted Levels, Gammas (continued) 183 Hg Levels (continued) E(level) † J π ‡ XREF Comments 9 6 . 9 4 c 1 9 1 9 / 2+ CD 9 9 . 0 + x & 3 1 9 / 2 -CD 1 0 9 . 0 5 b 2 2 2 1 / 2+ CD 1 2 1 . 5 + x @ 3 2 1 / 2 -CD 1 3 4 . 3 # 5 ( 1 9 / 2 -) CD XREF: D(1363). 1 4 0 . 5 3 c 2 4 2 3 / 2+ CD 1 4 0 . 7 § 6 2 1 / 2 -CD 1 4 6 . 8 + x & 4 2 3 / 2 -CD 1 5 5 . 4 b 3 2 5 / 2+ CD 1 7 2 . 9 + x @ 4 2 5 / 2 -CD 1 8 4 . 2 # 6 ( 2 3 / 2 -) CD XREF: D(1867). 1 9 1 . 6 c 3 2 7 / 2+ CD 1 9 2 . 5 § 6 2 5 / 2 -CD 1 9 9 . 7 + x & 4 2 7 / 2 -CD 2 0 7 . 7 b 4 2 9 / 2+ CD 2 2 7 . 7 + x @ 4 2 9 / 2 -CD 2 4 0 . 9 # 7 ( 2 7 / 2 -) CD XREF: D(2426).

2 4 9 . 0 § 7 2 9 / 2 -CD 2 4 9 . 5 c 4 3 1 / 2+ CD 2 5 8 . 8 + x & 5 3 1 / 2 -CD 2 6 5 . 7 b 4 3 3 / 2+ CD 2 8 7 . 5 + x @ 5 3 3 / 2 -CD 3 0 1 . 7 9 ( 3 1 / 2 -) D XREF: D(3027). 3 0 2 . 5 # 8 ( 3 1 / 2 -) C 3 1 0 . 1 § 7 3 3 / 2 -CD 3 1 3 . 8 c 6 ( 3 5 / 2+ ) CD 3 2 1 . 0 + x & 6 ( 3 5 / 2 -) CD 3 2 9 . 3 b 5 ( 3 7 / 2+ ) CD 3 5 2 . 0 + x @ 7 ( 3 7 / 2 -) CD 3 6 3 . 6 1 0 ( 3 5 / 2 -) D XREF: D(3649). 3 7 2 . 9 § 1 0 ( 3 7 / 2 -) CD 3 8 3 . 0 c 9 ( 3 9 / 2+ ) CD 3 8 8 . 4 + x & 7 ( 3 9 / 2 -) CD 3 9 7 . 8 b 7 ( 4 1 / 2+ ) CD 4 5 6 . 0 c 1 0 ( 4 3 / 2+ ) D

4 7 0 . 9 b 9 ( 4 5 / 2+ ) CD † From least-squares adjustment of adopted Eγ . Energies for 9/2[624] band members are given relative to E=266 for the 13/2+ state fed in α decay; adopted E=266 20 for the latter state. ‡ Values given without comment are from 155 Gd( 32 S,4nγ ) E=159 MeV; they are based on γ multipolarity information and deduced band structure. § (A): 1/2[521], α =+1/2 band (1995La10). Differs from that deduced in 155 Gd( 32 S,4nγ ) E=160 MeV; see comments for this band in that dataset. # (B): 1/2[521], α =-1/2 band (1995La10). Differs from that deduced in 155 Gd( 32 S,4nγ ) E=160 MeV; see comments for this band in that dataset. @ (C): 7/2[514], α =+1/2 band (1995La10). & (D): 7/2[514], α =-1/2 band (1995La10). a (E): i 13/2 band. Oblate, possibly isomeric bandhead is the only state observed. b (F): 9/2[624], α =+1/2 band (1995La10,1995Sh04). Large signature splitting may indicate hexadecapole deformation or mixing of this prolate band with oblate structure from same (ν i 13/2 ) subshell (1995Sh04). c (G): 9/2[624], α =-1/2 band (1995La10,1995Sh04). Large signature splitting may indicate hexadecapole deformation or mixing of this prolate band with oblate structure from same (ν i 13/2 ) subshell (1995Sh04). d The spin was measured by optical pumping (1972Bo09); π is determined by the agreement of µ with the Nilsson model prediction for the 1/2[521] orbital. γ( 183 Hg) E(level) E γ † I γ † Mult. ‡ α Comments 6 . 1 6 6 7 . 1 3 1 0 0 E2 § 3 3 . 3 7 B(E2)(W.u.)>12. E γ : average of 67.4 3 from α decay (15.2 s) and 66.8 3 from 155 Gd( 32 S,4nγ ) E=159 MeV.