ADOPTED LEVELS, GAMMAS for 151Tm

Author: Balraj Singh |  Citation: Nucl. Data Sheets 110, 1 (2009) |  Cutoff date: 20-Nov-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-9.2×103 keV 3S(n)= 12353 keV SYS(p)= 230 keV 9Q(α)= 2559 keV 20
Reference: 2017WA10

References:
  A  151Tm IT decay (0.451 μs)  B  151Tm IT decay (24 NS)
  C  151Yb ε decay (1.6 S):MIXED  D  152Lu εp decay (0.7 S)
  E  155Lu α decay (68 MS)  F  155Lu α decay (138 MS)
  G  155Lu α decay (2.69 MS) 

General Comments:

Theoretical calculations (levels, moments, etc.): 2000Ma90, 1993To07, 1992Di05, 1982We12, 1981La26

Q-value: ΔS(n)=197

Q-value: Q(ε)=7490 3, S(2n)=23033 syst 197, S(2p)=3704 9, Q(εp)=3884 16










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCDE G (11/2-) 4.17 s 11 
% ε = 100
     
     0.0+X  C  F  (1/2+) 6.6 s 20 
% ε = 100
     
   108.4+X  C     (3/2+)      108.4 1 
  100
(M1)
     0.0+X
(1/2+)
   582.6+X  C     (5/2+)      474.2 2 
  100

   108.4+X
(3/2+)
  1074.0 6   C         1074.0 6 
  100

     0.0
(11/2-)
  1102.7+X  C     (7/2+)      520.1 2 
  100

   582.6+X
(5/2+)
  1477.60 10 AB      (15/2-)     1477.7 1 
  100

     0.0
(11/2-)
  1489.83 18 AB      (15/2+)     1489.8 2 
  100

     0.0
(11/2-)
  1905.64 13 ?AB      (19/2+)      415.8 1 
  100

  1489.83
(15/2+)
  2176.48 19 AB      (19/2-)      698.8 2 
  100

  1477.60
(15/2-)
  2299.55 20 AB      (23/2+)      393.9 1 
  100

  1905.64
(19/2+)
  2515.27 20 AB      (23/2-)      215.7 2 
   338.8 1 
   14 1 
  100 5 


  2299.55
  2176.48
(23/2+)
(19/2-)
  2655.67 22 AB      (27/2-) 0.451 µs 34 
% IT = 100
   140.4 1 
  100
E2
  2515.27
(23/2-)
  3555.6 3  B          1256.0 2 
  100

  2299.55
(23/2+)
  3981.4 4  B           425.8 3 
  100

  3555.6

  3987.9 3  B      (31/2-)     1332.2 1 
  100
(E2)
  2655.67
(27/2-)
  4407.2 3  B           425.8 3 
  100

  3981.4

  4612.7 3  B      (35/2-)      624.8 1 
  100
(E2)
  3987.9
(31/2-)
  5858.3 4  B      (37/2)     1245.6 2 
  1451 1 
  100 6 
   10 6 
(D)

  4612.7
  4407.2
(35/2-)

  6908.5 4  B      24 ns 4    1050.2 2 
  100

  5858.3
(37/2)

E(level): From least-squares fit to Eγ’s. From systematics the ground state is expected to be the s1/2 single proton state and the h11/2 state to be the isomer. However, this has not been established experimentally.

Jπ(level): From shell-model considerations. The negative parity states are well described by πh11/25 yrast levels. The positive parity levels are assumed to have an h11/2 proton coupled to a 3-, 5-, 7- core. The 0+x (1/2+), 108+x (3/2+), 583+x (5/2+) and 1103+x (7/2+) levels are interpreted as the s1/2, d3/2, d5/2, g7/2 single proton states, respectively

Back to top

Back to top

Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   108.4+X (3/2+)      108.4 1 (M1)2.46α=2.46
  2655.67 (27/2-) 0.451 µs 34 
% IT = 100
   140.4 1 E20.90B(E2)(W.u.)=0.257 14, α=0.90

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

Back to top

Additional Gamma Comments:

E(level)E(gamma)Comments
   108.4+X   108.4M(γ): from α(K)exp in 151Yb ε decay
   582.6+X   474.2M(γ): From isotonic systematics, probable mult=M1
  1102.7+X   520.1M(γ): From isotonic systematics, probable mult=M1
  1905.64   415.8E(γ): Ordering of 415-393 cascade is tentative
  2299.55   393.9E(γ): Ordering of 415-393 cascade is tentative
  2655.67   140.4M(γ): from α(exp) determined from intensity balance
  3981.4   425.8E(γ): Multiply placed
  3987.9  1332.2M(γ): From γ(θ) in IT decay
  4407.2   425.8E(γ): Multiply placed
  4612.7   624.8M(γ): From γ(θ) in IT decay
  5858.3  1245.6M(γ): From γ(θ) in IT decay

Back to top