ADOPTED LEVELS, GAMMAS for 190Po

Authors: Balraj Singh, and Jun Chen |  Citation: Nucl. Data Sheets 169, 1 (2020) |  Cutoff date: 15-Oct-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 11213 keV 26S(p)= 1788 keV 25Q(α)= 7693 keV 7
Reference: 2017WA10

References:
  A  194Rn α decay (0.78 MS)  B  142Nd(52Cr,4nγ)
  C  144Sm(49Ti,3nγ) 

General Comments:

Other measurements:

1996Ba35, 1997Ba25: 190Po produced and identified in 144Sm(48Ti,2n),E=215 MeV; and 96Mo(96Mo,2n),E=420 MeV; reactions at ORNL accelerator facility; measured Eα, Iα, T1/2; deduced α-decay reduced widths.

1997An09, 1999An22, 2000An14, 2001An07: 190Po produced and identified in 144Sm(48Ti,2n),E=202,208,221 MeV; and 142Nd(52Cr,4n) reactions; measured Eα, Iα, (α)(ce)-coin, α(x-ray)-coin, αγ-coin, half-life; Deduced HF. Experiments carried out at JYFL, Jyvaskyla and GSI accelerator facilities

2003Va05: 142Nd(52Cr,4n),E=255 MeV; measured Eγ, Iγ, (recoil)γ-coin, T1/2 of decay of 190Po.

Analysis of mass measurement data: 2002No01

Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for about 50 primary references dealing with nuclear structure and other calculations.

Q-value: S(2n)=20162 24, S(2p)=1327 17, Q(εp)=5991 19 (2017Wa10)









E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
     0.0ABC 0+ 2.45 ms 5 
% α = 100
    
   234.1 9  BC (2+)     234.1 9 
  100
     0.0
0+
   532.4 9  BC (4+)     298.3 1 
  100
   234.1
(2+)
   901.8 10  BC (6+)     369.4 2 
  100
   532.4
(4+)
  1338.7 10  BC (8+)     436.9 2 
  100
   901.8
(6+)
  1837.2 12   C (10+)     498.5 6 
 
  1338.7
(8+)
  2402.2 15 ?  C (12+)     565.0 10 ?
 
  1837.2
(10+)
  3040.2 18 ?  C (14+)     638.0 10 ?
 
  2402.2
(12+)

E(level): From Eγ data

Jπ(level): From systematics of even-even nuclei and yrast band structure

E(γ): From 144Sm(49Ti,3nγ)

Back to top

Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)Final Levels
Band 1 - g.s. band
     0.0 0+ 2.45 ms 5 
% α = 100
    
   234.1 9  (2+)     234.1 9 
  100
     0.0
0+
   532.4 9  (4+)     298.3 1 
  100
   234.1
(2+)
   901.8 10  (6+)     369.4 2 
  100
   532.4
(4+)
  1338.7 10  (8+)     436.9 2 
  100
   901.8
(6+)
  1837.2 12  (10+)     498.5 6 
 
  1338.7
(8+)
  2402.2 15 ? (12+)     565.0 10 ?
 
  1837.2
(10+)
  3040.2 18 ? (14+)     638.0 10 ?
 
  2402.2
(12+)

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 2.45 ms 5 
% α = 100
%ε+%β+=0.1 (from systematics).
E(level): g.s. band.
   234.1(2+)   E(level): g.s. band.
   532.4(4+)   E(level): g.s. band.
   901.8(6+)   E(level): g.s. band.
  1338.7(8+)   E(level): g.s. band.
  1837.2(10+)   E(level): g.s. band.
  2402.2(12+)   E(level): g.s. band.
  3040.2(14+)   E(level): g.s. band.

Back to top