ADOPTED LEVELS, GAMMAS for 71Cu

Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 188, 1 (2023) |  Cutoff date: 17-Jan-2023 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=4618 keV 3S(n)= 7806.1 keV 18S(p)= 10786.2 keV 26Q(α)= -9814 keV 7
Reference: 2021WA16

References:
  A  71Ni β- decay (2.56 S)  B  71Ni β- decay (2.3 S)
  C  2H(72Zn,3He)  D  9Be(76Ge,xγ),NI(86Kr,xγ)
  E  Coulomb Excitation  F  198Pt(76Ge,xγ)
  G  208Pb(70Zn,xγ)  H  238U(64Ni,xγ)

General Comments:

Mass measurement: 2007Gu09

Other measurements:

1983Ru06: produced by 76Ge on W, E=9 MeV/nucleon, on-line mass separation and tape-transport system; measured half-life

1999Pr10: production in 76Ge fragmentation

2008St01: E=1 GeV proton beam provided by CERN PS booster. 71Cu beam was obtained using the ISOLDE fragment separator and implanted in the NICOLE detector system. The refrigerator temperature was varied between 1 K and 11-12 mK. Measured nuclear dipole moment of g.s. using β-NMR method on oriented nuclei at low temperatures.

2009Fl03, 2010Vi07: in-source laser spectroscopy and collinear laser spectroscopy at ISOLDE-CERN facility. Measured spin, and static magnetic moment and static quadrupole moment of the ground state

2016Bi08: 71Cu isotope was produced by bombarding UCx target with 1.4 GeV proton beam at the CERN-ISOLDE facility. Cu isotopes were selectively ionized by the RILIS laser ion source, accelerated to 30 keV, mass separated with the high-resolution mass separator, and injected into the gas-filled linear Paul trap. Measured isotope shift with respect to 65Cu using the collinear laser spectroscopy setup. Studied systematics of isotope shifts on 58-75Cu isotopes. Compared with droplet model predictions.

2020De21: 71Cu isotope was produced by bombarding 238U target with neutrons produced by impinging a 1.4 GeV proton beam on a neutron converter at the CERN-ISOLDE facility. Cu isotopes were selectively ionized by the RILIS laser ion source, accelerated to 30 keV for mass separation with high-resolution mass separator, and injected into ISCOOL gas-filled linear Paul trap. Measured isotope shift with respect to 65Cu using collinear resonance ionization spectroscopy.

Theoretical calculations:

2022Ba29, 2021Ro19: calculated energies of the ground-state and the first-excited state, Jπ of g.s. using simple effective interaction (SEI) with and without the addition of a short-range tensor force to SEI and SIII-t, SLy5-t, SAMi-T Skyrme and D1MTd Gogny effective interaction

2022Ma30: calculated ground state energy, electric quadrupole moment, charge radius using shell model and other theoretical approaches.

2020Bo22: calculated charge radius using the self-consistent theory of finite Fermi systems and the family of energy density functionals.

2018Mi22: calculated M1 γ-strength function using large-scale shell model.

2018Na18: calculated potential energy curves, binding energy per nucleon, deformation parameters, total quadrupole moments, T1/2, radius, electron- and positron-capture rates using the density-dependent relativistic mean field (RMF) model.

2015Ka46: calculated binding energy, effective single-particle energies of proton orbit, level energies of low-lying, low spin states and B(E2) values, magnetic moments and electric quadrupole moments using shell model.

2012Sr02, 2012Sr03: calculated low-lying level energies, Jπ, B(E2) using shell model

2010Da06: calculated low-lying levels, Jπ using shell model

2010Si11: calculated levels, Jπ, neutron and proton orbital occupancies, magnetic moments, g factors using large-scale shell model.

2005Li54: calculated level energies, Jπ using shell model.

2004Sm03: calculated level energies, spectroscopic factors, monopole shift using shell model

2003Ji09: calculated deformation, superdeformed configurations using relativistic mean-field approach.

Q-value: S(2n)=13117.5 20, S(2p)=26900 90 (2021Wa16)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCDEFGH 3/2(-) 19.4 s 16 
% β- = 100
     
   454.20 10  B  E    (1/2-)      454.2 1 
  100
[M1+E2]
     0.0
3/2(-)
   534.37 7 A CDEFGH (5/2-)      534.4 1 
  100

     0.0
3/2(-)
   981.33 8 A  D  GH (7/2-) 14 ps 6     447.0 1 
   981.3 1 
   30.0 22 
  100 3 
[M1,E2]
[E2]
   534.37
     0.0
(5/2-)
3/2(-)
  1189.39 8 A  DEFGH (7/2-) 1.15 ps 13     655.1 1 
  1189.4 1 
   10.1 11 
  100 3 
[M1,E2]
[E2]
   534.37
     0.0
(5/2-)
3/2(-)
  1453.31 10 A     GH (9/2-)      472.0 1 
  100

   981.33
(7/2-)
  1633.3 7 ?   D          652?
 

   981.33
(7/2-)
  1786.28 10 A  D F H (9/2-)     1251.8 1 
  100

   534.37
(5/2-)
  1845.69 12 A C      (7/2-,9/2-)     1311.3 1 
  100

   534.37
(5/2-)
  1895.10 21 A C      (7/2-)      705.7 2 
  100

  1189.39
(7/2-)
  1973.67 18 A     GH (11/2-)      520.3 2 
   992
  100
 


  1453.31
   981.33
(9/2-)
(7/2-)
  2128.29 13 A  D FGH (11/2-)      341.8 2 
   495?
   674.9 5 
   939.1 2 
   11.8 15 
 
    1.9 6 
  100 6 




  1786.28
  1633.3
  1453.31
  1189.39
(9/2-)

(9/2-)
(7/2-)
  2151.6 4 ?   D         2151.0?
 

     0.0
3/2(-)
  2289.73 13 ?A             161.4 1 
  100

  2128.29
(11/2-)
  2551.4 10 A        (7/2+)     2017.0 10 
  100

   534.37
(5/2-)
  2576.7 8       G  (13/2-)      603
 

  1973.67
(11/2-)
  2599.79 11 A            1410.4 1 
  100

  1189.39
(7/2-)
  2623.14 19    D FGH (15/2-) 328 ps 17     471.0?
   495.0 2 
   649.4 2 
 
  100
   52 4 

[E2]

  2151.6
  2128.29
  1973.67

(11/2-)
(11/2-)
  2686.40 14 A            1497.1 2 
  100

  1189.39
(7/2-)
  2751.12 23 A            1297.8 2 
  100

  1453.31
(9/2-)
  2756.1 4    D FGH (19/2-) 0.271 µs 14 
% IT = 100
   132.9 2 
  100
[E2]
  2623.14
(15/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2805.88 11 A        (7/2+,9/2+,11/2+)      206.1 1 
  1019.0 3 
  1352.6 1 
   26 6 
   84 7 
  100 9 



  2599.79
  1786.28
  1453.31

(9/2-)
(9/2-)
  2867.3 8 A        (7/2+,9/2+)     1885.9 8 
  100

   981.33
(7/2-)
  2925.19 23 A        (7/2+,9/2+,11/2+)     1138.9 2 
  100

  1786.28
(9/2-)
  2971.7 8       G  (15/2-)      395
   998
 
 


  2576.7
  1973.67
(13/2-)
(11/2-)
  3034.47 12 A        (7/2+,9/2+,11/2+)      348.1 1 
   744.7 1 
  1248.2 1 
  1581.0 4 
   27 5 
   19 5 
  100 11 
   31 7 




  2686.40
  2289.73
  1786.28
  1453.31


(9/2-)
(9/2-)
     3.24E3 20   C      (7/2)-        
  3430.7 13       G  (17/2-)      459
 

  2971.7
(15/2-)
     4.36E3 17   C      (7/2)-        
  4776.5 6        H (23/2-)     2020.3 5 
 

  2756.1
(19/2-)
  5330.7 8        H (25/2,27/2-)      554.2 5 
 

  4776.5
(23/2-)
     5.92E3 18   C      1/2+&(3/2)+        

E(level): From a least-squares fit to Eγ data, assuming ΔEγ=0.5 keV for Eγ quoted to nearest tenth keV and 1 keV for Eγ quoted to keV, where ΔEγ not given.

Jπ(level): In addition to the arguments given with individual levels, assignments for many levels are also supported by shell-model calculations by 2021Pe08, 2015Li33, 2015Mo22, 2009St05 2008St04 and 1998Is11 in 71Ni decay, 2H(72Zn,3He), Coulomb excitation, and several heavy-ion reaction studies

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Band based on 3/2(-).
     0.0 3/2(-) 19.4 s 16 
% β- = 100
     
  1189.39 8  (7/2-) 1.15 ps 13     655.1 1 
  1189.4 1 
   10.1 11 
  100 3 
[M1,E2]
[E2]
   534.37
     0.0
(5/2-)
3/2(-)
  2128.29 13  (11/2-)      341.8 2 
   495?
   674.9 5 
   939.1 2 
   11.8 15 
 
    1.9 6 
  100 6 




  1786.28
  1633.3
  1453.31
  1189.39
(9/2-)

(9/2-)
(7/2-)
  2623.14 19  (15/2-) 328 ps 17     471.0?
   495.0 2 
   649.4 2 
 
  100
   52 4 

[E2]

  2151.6
  2128.29
  1973.67

(11/2-)
(11/2-)
  2756.1 4  (19/2-) 0.271 µs 14 
% IT = 100
   132.9 2 
  100
[E2]
  2623.14
(15/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - ΔJ=1 band based on (5/2-)
   534.37 7  (5/2-)        
   981.33 8  (7/2-) 14 ps 6     447.0 1 
   981.3 1 
   30.0 22 
  100 3 
[M1,E2]
[E2]
   534.37
     0.0
(5/2-)
3/2(-)
  1453.31 10  (9/2-)      472.0 1 
  100

   981.33
(7/2-)
  1973.67 18  (11/2-)      520.3 2 
   992
  100
 


  1453.31
   981.33
(9/2-)
(7/2-)
  2576.7 8  (13/2-)      603
 

  1973.67
(11/2-)
  2971.7 8  (15/2-)      395
   998
 
 


  2576.7
  1973.67
(13/2-)
(11/2-)
  3430.7 13  (17/2-)      459
 

  2971.7
(15/2-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   454.20 (1/2-)      454.2 1 [M1+E2]0.0018B(E2)(W.u.)=20.4 22 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2008St04 ">2008St04</a>), α=0.0018 6
   981.33 (7/2-) 14 ps 6     447.0 1 [M1,E2]0.0019α=0.0019 7
(7/2-) 14 ps 6     981.3 1 [E2]B(E2)(W.u.)=2.0 +14-6
  1189.39 (7/2-) 1.15 ps 13    1189.4 1 [E2]B(E2)(W.u.)=10.7 12 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2008St04 ">2008St04</a>)
  2623.14 (15/2-) 328 ps 17     495.0 2 [E2]1.87×10-3B(E2)(W.u.)=2.18 +13-12, α=1.87E-3 3
  2756.1 (19/2-) 0.271 µs 14 
% IT = 100
   132.9 2 [E2]0.2079B(E2)(W.u.)=2.38 +13-12, α=0.2079 34, α(K)=0.1844 30, α(L)=0.02049 34, α(M)=0.00285 5, α(N)=7.28E-5 12

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.03/2(-) 19.4 s 16 
% β- = 100
μ=+2.2772 8 (2009Fl03,2010Vi07,2019StZV), Q=-0.200 17 (2010Vi07,2016St14,2021StZZ)
Configuration: π2p3/21~#ν1g9/22 (2008St01).
E(level): Band based on 3/2(-).
   534.37(5/2-)   E(level): ΔJ=1 band based on (5/2-).
   981.33(7/2-) 14 ps 6  XREF: d(?).
E(level): ΔJ=1 band based on (5/2-).
  1189.39(7/2-) 1.15 ps 13  E(level): Band based on 3/2(-).
  1453.31(9/2-)   E(level): ΔJ=1 band based on (5/2-).
  1973.67(11/2-)   E(level): ΔJ=1 band based on (5/2-).
  2128.29(11/2-)   E(level): Band based on 3/2(-).
  2576.7(13/2-)   E(level): ΔJ=1 band based on (5/2-).
  2623.14(15/2-) 328 ps 17  E(level): Band based on 3/2(-).
  2756.1(19/2-) 0.271 µs 14 
% IT = 100
E(level): Band based on 3/2(-).
  2971.7(15/2-)   E(level): ΔJ=1 band based on (5/2-).
  3430.7(17/2-)   E(level): ΔJ=1 band based on (5/2-).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   454.20   454.2E(γ): from Coulomb excitation
   534.37   534.4E(γ): others: 534.4 6 from (76Ge,Xγ) and 534.3 2 from (64Ni,Xγ)
   981.33   447.0E(γ): weighted average of 446.9 1 from 71Ni β- decay (2.56 s) and 447.2 2 from (64Ni,Xγ)
I(γ): other: 29 5 from (64Ni,Xγ)
  1189.39   655.1E(γ): other: 654.9 2 from (64Ni,Xγ)
I(γ): weighted average of 9.6 18 from 71Ni β- decay (2.56 s), 10.4 11 from (64Ni,Xγ), and 9.6 18 from Coulomb excitation
  1189.4E(γ): weighted average of 1189.5 1 from 71Ni β- decay (2.56 s), 1189.1 4 from 198Pt(76Ge,Xγ), and 1189.2 2 from (64Ni,Xγ)
I(γ): from 71Ni β- decay (2.56 s). Others: 100 4 from (64Ni,Xγ) and 100.0 30 from Coulomb excitation
  1453.31   472.0E(γ): other: 471.9 2 from (64Ni,Xγ)
  1633.3   652E(γ): From 9Be(76Zn,Xγ),Ni(86Kr,Xγ)
  1786.28  1251.8E(γ): weighted average of 1251.7 1 from 71Ni β- decay (2.56 s) and 1252.2 2 from (64Ni,Xγ). Other: 1251.6 9 from (76Ge,Xγ)
  1973.67   520.3E(γ): weighted average of 520.2 1 from 71Ni β- decay (2.56 s) and 520.6 2 from (64Ni,Xγ)
   992E(γ): From 208Pb(70Zn,Xγ)
  2128.29   341.8E(γ): other: 342.4 9 from 198Pt(76Ge,Xγ). From 238U(64Ni,Xγ)
I(γ): weighted average of 16 8 from 198Pt(76Ge,Xγ) and 11.6 15 from (64Ni,Xγ)
   495E(γ): From 9Be(76Zn,Xγ),Ni(86Kr,Xγ)
   674.9E(γ): From 238U(64Ni,Xγ)
I(γ): From 238U(64Ni,Xγ)
   939.1E(γ): weighted average of 939.5 2 from 71Ni β- decay (2.56 s), 939.1 4 from 198Pt(76Ge,Xγ), and 939.1 2 from (64Ni,Xγ)
I(γ): from (64Ni,Xγ). Other: 100 10 from 198Pt(76Ge,Xγ)
  2151.6  2151.0E(γ): From 9Be(76Zn,Xγ),Ni(86Kr,Xγ)
  2576.7   603E(γ): From 208Pb(70Zn,Xγ)
  2623.14   471.0E(γ): From 9Be(76Zn,Xγ),Ni(86Kr,Xγ)
   495.0E(γ): weighted average of 494.7 3 from 198Pt(76Ge,Xγ) and 495.1 2 from (64Ni,Xγ)
   649.4E(γ): From 238U(64Ni,Xγ)
I(γ): From 238U(64Ni,Xγ)
  2756.1   132.9E(γ): weighted average of 133.0 3 from 198Pt(76Ge,Xγ) and 132.8 2 from (64Ni,Xγ)
  2971.7   395E(γ): From 208Pb(70Zn,Xγ)
   998E(γ): From 208Pb(70Zn,Xγ)
  3430.7   459E(γ): From 208Pb(70Zn,Xγ)
  4776.5  2020.3E(γ): From 238U(64Ni,Xγ)
  5330.7   554.2E(γ): From 238U(64Ni,Xγ)

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