ADOPTED LEVELS, GAMMAS for 161Hf

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 31-DEC-2014 

Author: C. W. Reich |  Citation: Nucl. Data Sheets 112,2497 (2011) |  Cutoff date: 1-Jun-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-7610 keV 30S(n)= 8455 keV 25S(p)= 3330 keV 60Q(α)= 4685 keV 24
Reference: 2012WA38

References:
  A  165W α decay (5.1 S)  B  110Pd(56Fe,5nγ)
  C  126Te(40Ca,5nγ) 

General Comments:

161Hf produced and identified by 1973To02 in 144,147Sm(20Ne,xn),E=80-153 MeV reaction; measured Eα, T1/2. Later studies of 161Hf decay: 1989Br19, 1992Ha10, 1995Hi12

Levels: Quasiparticle labels:

Levels: α: νi13/2, (π,α)=(+,+1/2)1

Levels: B: νi13/2, (π,α)=(+,-1/2)1

Levels: C: νi13/2, (π,α)=(+,+1/2)2

Levels: E: ν(h9/2,f7/2), (π,α)=(-,+1/2)1

Levels: F: ν(h9/2,f7/2), (π,α)=(-,-1/2)1

Levels: Ap: πh11/2, (π,α)=(-,-1/2)1

Levels: Bp: πh11/2, (π,α)=(-,+1/2)1

Q-value: S(2n)=19605 28, S(2p)=5055 29, Q(εp)=4561 28 (2012Wa38)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0.0AB  (7/2-) 18.4 s 4 
% ε > 99.87
% α < 0.13
     
    126.8 3  B  (9/2-)      126.8 3 
  100
M1
      0.0
(7/2-)
    329.0 5  BC (13/2+) 4.8 µs 2 
% IT = 100
   202.2 4 
  100
M2
    126.8
(9/2-)
    662.3 7  BC (17/2+)      333.3 4 
  100
Q
    329.0
(13/2+)
   1137.8 8  BC (21/2+)      475.5 5 
  100
Q
    662.3
(17/2+)
   1418.9 10  B  (17/2-)      756.5 10 
  100

    662.3
(17/2+)
   1698.0 10  BC (25/2+)      560.3 5 
  100
Q
   1137.8
(21/2+)
   1968.8 11  B  (21/2-)      549.9 9 
   831.1 15 
  100 17 
   33 17 
(Q)

   1418.9
   1137.8
(17/2-)
(21/2+)
   1982.2 10  B       563.3 12 
   844.4 6 
   50 25 
  100 25 


   1418.9
   1137.8
(17/2-)
(21/2+)
   2324.4 11  BC (29/2+)      626.4 5 
  100
Q
   1698.0
(25/2+)
   2399.1 10  B  (25/2-)      416.7 8 
   430.2 7 
  100 20 
  100 20 

(Q)
   1982.2
   1968.8

(21/2-)
   2466.3 14  B       768.5 13 
  100

   1698.0
(25/2+)
   2745.2 13  BC (27/2-)     1047.1 10 
  100
D
   1698.0
(25/2+)
   2871.6 11  B  (29/2-)      405.5 14 
   472.4 7 
   20 10 
  100 20 

(Q)
   2466.3
   2399.1

(25/2-)
   3002.0 11  BC (33/2+)      677.7 5 
  100
Q
   2324.4
(29/2+)
   3095.5 11  BC (31/2-)      349.8 22 
   771.1 7 
   15 15 
  100 8 

D
   2745.2
   2324.4
(27/2-)
(29/2+)
   3359.0 12  B  (33/2-)      263.7 10 
   487.4 5 
   30 10 
  100 10 

(Q)
   3095.5
   2871.6
(31/2-)
(29/2-)
   3645.1 12  BC (35/2-)      549.4 7 
   643.3 9 
  100 11 
   44 11 
(Q)

   3095.5
   3002.0
(31/2-)
(33/2+)
   3730.4 12  BC (37/2+)      728.4 5 
  100
Q
   3002.0
(33/2+)
   3924.7 13  B  (37/2-)      279.6 14 
   565.7 6 
   14 7 
  100 7 

(Q)
   3645.1
   3359.0
(35/2-)
(33/2-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   4277.9 14  BC (39/2-)      632.8 8 
  100
Q
   3645.1
(35/2-)
   4518.9 13  BC (41/2+)      788.5 5 
  100
Q
   3730.4
(37/2+)
   4571.9 14  B  (41/2-)      647.2 6 
  100

   3924.7
(37/2-)
   4981.9 17  BC (43/2-)      704.0 9 
  100

   4277.9
(39/2-)
   5273.6 15  BC (45/2+)      754.7 6 
  100
(Q)
   4518.9
(41/2+)
   5280.6 16  B  (45/2-)      708.7 7 
  100

   4571.9
(41/2-)
   5791.9 22  B  (47/2-)      810.0 14 
  100

   4981.9
(43/2-)
   6006.9 16  BC (49/2+)      733.3 6 
  100
Q
   5273.6
(45/2+)
   6082.2 18  B  (49/2-)      801.6 8 
  100

   5280.6
(45/2-)
   6655 4  B  (51/2-)      863 3 
  100

   5791.9
(47/2-)
   6790.2 18  B  (53/2+)      783.3 8 
  100

   6006.9
(49/2+)
   6921.0 20  B  (53/2-)      838.8 9 
  100

   6082.2
(49/2-)
   7488 4  B  (55/2-)      833.0 13 
  100

   6655
(51/2-)
   7639.1 22  B  (57/2+)      848.9 12 
  100

   6790.2
(53/2+)
   7681.4 24  B  (57/2-)      760.4 13 
  100

   6921.0
(53/2-)
   8480 3  B  (61/2-)      798.5 14 
  100

   7681.4
(57/2-)
   8553 3  B  (61/2+)      914.3 20 
  100

   7639.1
(57/2+)
   9361 3  B  (65/2-)      881.4 12 
  100

   8480
(61/2-)
   9531 4  B  (65/2+)      978 2 
  100

   8553
(61/2+)
  10294 4  B  (69/2-)      933 2 
  100

   9361
(65/2-)
  10546 4  B  (69/2+)     1015 2 
  100

   9531
(65/2+)
  11599 5 ? B  (73/2+)     1053 2 ?
  100

  10546
(69/2+)

E(level): From least-squares fit to Eγ data

Jπ(level): As proposed by 2014Ma91 based on angular distribution data for selected gamma rays, band structures and previous assignments

M(γ): From angular anisotropy ratios in both the high-spin reactions (1988Hu05,2014Ma91), mult=Q in dictates ΔJ=2, quadrupole (most likely E2) transition and mult=d indicates ΔJ=1, dipole

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Yrast band based on (13/2+),α=+1/2.
    329.0 5  (13/2+) 4.8 µs 2 
% IT = 100
     
    662.3 7  (17/2+)      333.3 4 
  100
Q
    329.0
(13/2+)
   1137.8 8  (21/2+)      475.5 5 
  100
Q
    662.3
(17/2+)
   1698.0 10  (25/2+)      560.3 5 
  100
Q
   1137.8
(21/2+)
   2324.4 11  (29/2+)      626.4 5 
  100
Q
   1698.0
(25/2+)
   3002.0 11  (33/2+)      677.7 5 
  100
Q
   2324.4
(29/2+)
   3730.4 12  (37/2+)      728.4 5 
  100
Q
   3002.0
(33/2+)
   4518.9 13  (41/2+)      788.5 5 
  100
Q
   3730.4
(37/2+)
   5273.6 15  (45/2+)      754.7 6 
  100
(Q)
   4518.9
(41/2+)
   6006.9 16  (49/2+)      733.3 6 
  100
Q
   5273.6
(45/2+)
   6790.2 18  (53/2+)      783.3 8 
  100

   6006.9
(49/2+)
   7639.1 22  (57/2+)      848.9 12 
  100

   6790.2
(53/2+)
   8553 3  (61/2+)      914.3 20 
  100

   7639.1
(57/2+)
   9531 4  (65/2+)      978 2 
  100

   8553
(61/2+)
  10546 4  (69/2+)     1015 2 
  100

   9531
(65/2+)
  11599 5  (73/2+)     1053 2 ?
  100

  10546
(69/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on (25/2-),α=+1/2.
   2399.1 10  (25/2-)        
   2871.6 11  (29/2-)      405.5 14 
   472.4 7 
   20 10 
  100 20 

(Q)
   2466.3
   2399.1

(25/2-)
   3359.0 12  (33/2-)      263.7 10 
   487.4 5 
   30 10 
  100 10 

(Q)
   3095.5
   2871.6
(31/2-)
(29/2-)
   3924.7 13  (37/2-)      279.6 14 
   565.7 6 
   14 7 
  100 7 

(Q)
   3645.1
   3359.0
(35/2-)
(33/2-)
   4571.9 14  (41/2-)      647.2 6 
  100

   3924.7
(37/2-)
   5280.6 16  (45/2-)      708.7 7 
  100

   4571.9
(41/2-)
   6082.2 18  (49/2-)      801.6 8 
  100

   5280.6
(45/2-)
   6921.0 20  (53/2-)      838.8 9 
  100

   6082.2
(49/2-)
   7681.4 24  (57/2-)      760.4 13 
  100

   6921.0
(53/2-)
   8480 3  (61/2-)      798.5 14 
  100

   7681.4
(57/2-)
   9361 3  (65/2-)      881.4 12 
  100

   8480
(61/2-)
  10294 4  (69/2-)      933 2 
  100

   9361
(65/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on (31/2-),α=-1/2.
   3095.5 11  (31/2-)        
   3645.1 12  (35/2-)      549.4 7 
   643.3 9 
  100 11 
   44 11 
(Q)

   3095.5
   3002.0
(31/2-)
(33/2+)
   4277.9 14  (39/2-)      632.8 8 
  100
Q
   3645.1
(35/2-)
   4981.9 17  (43/2-)      704.0 9 
  100

   4277.9
(39/2-)
   5791.9 22  (47/2-)      810.0 14 
  100

   4981.9
(43/2-)
   6655 4  (51/2-)      863 3 
  100

   5791.9
(47/2-)
   7488 4  (55/2-)      833.0 13 
  100

   6655
(51/2-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    126.8 (9/2-)      126.8 3 M12.03α=2.03, α(K)=1.692 25, α(L)=0.263 4, α(M)=0.0595 9, α(N)=0.01413 21
    329.0 (13/2+) 4.8 µs 2 
% IT = 100
   202.2 4 M22.86B(M2)(W.u.)=0.17 1, α=2.86 5, α(K)=2.20 4, α(L)=0.507 8, α(M)=0.1204 20, α(N)=0.0288 5

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    329.0(13/2+) 4.8 µs 2 
% IT = 100
Probable configuration=νi13/2 from systematics.
E(level): Yrast band based on (13/2+),α=+1/2.
    662.3(17/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   1137.8(21/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   1698.0(25/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   2324.4(29/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   2399.1(25/2-)   E(level): Band based on (25/2-),α=+1/2.
   2871.6(29/2-)   E(level): Band based on (25/2-),α=+1/2.
   3002.0(33/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   3095.5(31/2-)   E(level): Band based on (31/2-),α=-1/2.
   3359.0(33/2-)   E(level): Band based on (25/2-),α=+1/2.
   3645.1(35/2-)   E(level): Band based on (31/2-),α=-1/2.
   3730.4(37/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   3924.7(37/2-)   E(level): Band based on (25/2-),α=+1/2.
   4277.9(39/2-)   E(level): Band based on (31/2-),α=-1/2.
   4518.9(41/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   4571.9(41/2-)   E(level): Band based on (25/2-),α=+1/2.
   4981.9(43/2-)   E(level): Band based on (31/2-),α=-1/2.
   5273.6(45/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   5280.6(45/2-)   E(level): Band based on (25/2-),α=+1/2.
   5791.9(47/2-)   E(level): Band based on (31/2-),α=-1/2.
   6006.9(49/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   6082.2(49/2-)   E(level): Band based on (25/2-),α=+1/2.
   6655(51/2-)   E(level): Band based on (31/2-),α=-1/2.
   6790.2(53/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   6921.0(53/2-)   E(level): Band based on (25/2-),α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
   7488(55/2-)   E(level): Band based on (31/2-),α=-1/2.
   7639.1(57/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   7681.4(57/2-)   E(level): Band based on (25/2-),α=+1/2.
   8480(61/2-)   E(level): Band based on (25/2-),α=+1/2.
   8553(61/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
   9361(65/2-)   E(level): Band based on (25/2-),α=+1/2.
   9531(65/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
  10294(69/2-)   E(level): Band based on (25/2-),α=+1/2.
  10546(69/2+)   E(level): Yrast band based on (13/2+),α=+1/2.
  11599(73/2+)   E(level): Yrast band based on (13/2+),α=+1/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    126.8    126.8M(γ): From ce data in 110Pd(56Fe,5nγ) (2014Ma91)
    329.0    202.2M(γ): From ce data in 110Pd(56Fe,5nγ) (2014Ma91)

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