Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements
Abstract
Background: The structure of the semimagic Sn50 isotopes were previously studied via measurements of B(E2;21+→01+) and g factors of 21+ states. The values of the B(E2;21+) in the isotopes below midshell at N = 66 show an enhancement in collectivity, contrary to predictions from shell-model calculations. Purpose: This work presents the first measurement of the 21+ and 41+ states' magnetic moments in the unstable neutron-deficient Sn110. The g factors provide complementary structure information to the interpretation of the observed B(E2) values. Methods: The Sn110 nuclei have been produced in inverse kinematics in an α-particle transfer reaction from C12 to Cd106 projectiles at 390, 400, and 410 MeV. The g factors have been measured with the transient field technique. Lifetimes have been determined from line shapes using the Doppler-shift attenuation method. Results: The g factors of the 21+ and 41+ states in Sn110 are g(21+) = +0.29(11) and g(41+) = +0.05(14), respectively. In addition, the g(41+) = +0.27(6) in Cd106 has been measured for the first time. A line-shape analysis yielded τ(110Sn;21+) = 0.81(10) ps and a lifetime of τ(110Sn;31-) = 0.25(5) ps was calculated from the fully Doppler-shifted γ line. Conclusions: No evidence has been found in Sn110 that wouldmore »
- Authors:
-
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- Rutgers Univ., New Brunswick, NJ (United States)
- Univ. Bonn, Bonn (Germany)
- Univ. Nacional de Colombia, Bogota D.C. (Columbia)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of California, Berkeley, CA (United States)
- Millsaps College, Jackson, MS (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1263878
- Alternate Identifier(s):
- OSTI ID: 1247910; OSTI ID: 1379289
- Grant/Contract Number:
- AC05-00OR22725; AC52-07NA27344; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Kumbartzki, G. J., Benczer-Koller, N., Speidel, K. -H., Torres, D. A., Allmond, James M., Fallon, P., Abramovic, I., L. A. Bernstein, Bevins, J. E., Crawford, H. L., Guevara, Z. E., Gurdal, G., Hurst, A. M., Kirsch, L., Laplace, T. A., Lo, A., Matthews, E. F., Mayers, I., Phair, L. W., Ramirez, F., Robinson, S. J. Q., Sharon, Y. Y., and Wiens, A. Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements. United States: N. p., 2016.
Web. doi:10.1103/PhysRevC.93.044316.
Kumbartzki, G. J., Benczer-Koller, N., Speidel, K. -H., Torres, D. A., Allmond, James M., Fallon, P., Abramovic, I., L. A. Bernstein, Bevins, J. E., Crawford, H. L., Guevara, Z. E., Gurdal, G., Hurst, A. M., Kirsch, L., Laplace, T. A., Lo, A., Matthews, E. F., Mayers, I., Phair, L. W., Ramirez, F., Robinson, S. J. Q., Sharon, Y. Y., & Wiens, A. Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements. United States. https://doi.org/10.1103/PhysRevC.93.044316
Kumbartzki, G. J., Benczer-Koller, N., Speidel, K. -H., Torres, D. A., Allmond, James M., Fallon, P., Abramovic, I., L. A. Bernstein, Bevins, J. E., Crawford, H. L., Guevara, Z. E., Gurdal, G., Hurst, A. M., Kirsch, L., Laplace, T. A., Lo, A., Matthews, E. F., Mayers, I., Phair, L. W., Ramirez, F., Robinson, S. J. Q., Sharon, Y. Y., and Wiens, A. Mon .
"Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements". United States. https://doi.org/10.1103/PhysRevC.93.044316. https://www.osti.gov/servlets/purl/1263878.
@article{osti_1263878,
title = {Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements},
author = {Kumbartzki, G. J. and Benczer-Koller, N. and Speidel, K. -H. and Torres, D. A. and Allmond, James M. and Fallon, P. and Abramovic, I. and L. A. Bernstein and Bevins, J. E. and Crawford, H. L. and Guevara, Z. E. and Gurdal, G. and Hurst, A. M. and Kirsch, L. and Laplace, T. A. and Lo, A. and Matthews, E. F. and Mayers, I. and Phair, L. W. and Ramirez, F. and Robinson, S. J. Q. and Sharon, Y. Y. and Wiens, A.},
abstractNote = {Background: The structure of the semimagic Sn50 isotopes were previously studied via measurements of B(E2;21+→01+) and g factors of 21+ states. The values of the B(E2;21+) in the isotopes below midshell at N = 66 show an enhancement in collectivity, contrary to predictions from shell-model calculations. Purpose: This work presents the first measurement of the 21+ and 41+ states' magnetic moments in the unstable neutron-deficient Sn110. The g factors provide complementary structure information to the interpretation of the observed B(E2) values. Methods: The Sn110 nuclei have been produced in inverse kinematics in an α-particle transfer reaction from C12 to Cd106 projectiles at 390, 400, and 410 MeV. The g factors have been measured with the transient field technique. Lifetimes have been determined from line shapes using the Doppler-shift attenuation method. Results: The g factors of the 21+ and 41+ states in Sn110 are g(21+) = +0.29(11) and g(41+) = +0.05(14), respectively. In addition, the g(41+) = +0.27(6) in Cd106 has been measured for the first time. A line-shape analysis yielded τ(110Sn;21+) = 0.81(10) ps and a lifetime of τ(110Sn;31-) = 0.25(5) ps was calculated from the fully Doppler-shifted γ line. Conclusions: No evidence has been found in Sn110 that would require excitation of protons from the closed Z=50 core.},
doi = {10.1103/PhysRevC.93.044316},
journal = {Physical Review C},
number = 4,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}
Web of Science
Works referenced in this record:
Magnetic dipole moment of the first excited state of isotopes and isotones in relativistic QRPA
journal, May 2007
- Ansari, A.; Ring, P.
- Physics Letters B, Vol. 649, Issue 2-3
g factors in 116,118,120Sn: Sensitivity to configurations near the Fermi surface
journal, July 2008
- East, M. C.; Stuchbery, A. E.; Wilson, A. N.
- Physics Letters B, Vol. 665, Issue 4
Quadrupole collectivity in neutron-deficient Sn nuclei: Sn and the role of proton excitations
journal, November 2013
- Bader, V. M.; Gade, A.; Weisshaar, D.
- Physical Review C, Vol. 88, Issue 5
Nuclear Data Sheets for A = 106
journal, April 2008
- De Frenne, D.; Negret, A.
- Nuclear Data Sheets, Vol. 109, Issue 4
Evidence for reduced collectivity around the neutron mid-shell in the stable even-mass Sn isotopes from new lifetime measurements
journal, January 2011
- Jungclaus, A.; Walker, J.; Leske, J.
- Physics Letters B, Vol. 695, Issue 1-4
Sub-Barrier Coulomb Excitation of and Its Implications for the Shell Closure
journal, April 2007
- Cederkäll, J.; Ekström, A.; Fahlander, C.
- Physical Review Letters, Vol. 98, Issue 17
studied with intermediate-energy Coulomb excitation
journal, December 2005
- Banu, A.; Gerl, J.; Fahlander, C.
- Physical Review C, Vol. 72, Issue 6
Transition Strengths in and
journal, July 2008
- Ekström, A.; Cederkäll, J.; Fahlander, C.
- Physical Review Letters, Vol. 101, Issue 1
Coulomb excitation of Sn
journal, December 2011
- Allmond, J. M.; Radford, D. C.; Baktash, C.
- Physical Review C, Vol. 84, Issue 6
First -factor measurements of the and the states of radioactive Pd
journal, October 2011
- Torres, D. A.; Kumbartzki, G. J.; Sharon, Y. Y.
- Physical Review C, Vol. 84, Issue 4
Intermediate-energy Coulomb excitation of : Moderate strength decrease approaching
journal, December 2014
- Doornenbal, P.; Takeuchi, S.; Aoi, N.
- Physical Review C, Vol. 90, Issue 6
Investigation into the semimagic nature of the tin isotopes through electromagnetic moments
journal, October 2015
- Allmond, J. M.; Stuchbery, A. E.; Galindo-Uribarri, A.
- Physical Review C, Vol. 92, Issue 4
Magnetic moments of short-lived excited nuclear states: measurements and challenges
journal, July 2007
- Benczer-Koller, N.; Kumbartzki, G. J.
- Journal of Physics G: Nuclear and Particle Physics, Vol. 34, Issue 9
Shell model study of the isobaric chains A=50, A=51 and A=52
journal, November 2001
- Poves, A.; Sánchez-Solano, J.; Caurier, E.
- Nuclear Physics A, Vol. 694, Issue 1-2
Transient field factor and mean-life measurements with a rare isotope beam of Sn
journal, September 2012
- Kumbartzki, G. J.; Benczer-Koller, N.; Torres, D. A.
- Physical Review C, Vol. 86, Issue 3
Magnetic moments of 2 states in Sn
journal, May 2013
- Allmond, J. M.; Stuchbery, A. E.; Radford, D. C.
- Physical Review C, Vol. 87, Issue 5
Coulomb Excitation of and the Strength of the Shell Closure
journal, April 2013
- Guastalla, G.; DiJulio, D. D.; Górska, M.
- Physical Review Letters, Vol. 110, Issue 17
Nuclear Data Sheets for A = 110
journal, May 2012
- Gürdal, G.; Kondev, F. G.
- Nuclear Data Sheets, Vol. 113, Issue 5
Measured factors and the tidal-wave description of transitional nuclei near
journal, May 2011
- Chamoli, S. K.; Stuchbery, A. E.; Frauendorf, S.
- Physical Review C, Vol. 83, Issue 5
Shell Gap near from Intermediate-Energy Coulomb Excitations in Even-Mass Isotopes
journal, October 2007
- Vaman, C.; Andreoiu, C.; Bazin, D.
- Physical Review Letters, Vol. 99, Issue 16
Systematic calculations of low-lying states of even-even nuclei within the nucleon pair approximation
journal, March 2007
- Jia, L. Y.; Zhang, H.; Zhao, Y. M.
- Physical Review C, Vol. 75, Issue 3
Transition from collectivity to single-particle degrees of freedom from magnetic moment measurements on and
journal, June 2014
- Kumbartzki, G. J.; Benczer-Koller, N.; Burcher, S.
- Physical Review C, Vol. 89, Issue 6
Velocity dependence of the dynamic magnetic field acting on swift O and Sm ions
journal, May 1980
- Shu, N. K. B.; Melnik, D.; Brennan, J. M.
- Physical Review C, Vol. 21, Issue 5
Magnetic moments of the states around
journal, April 2005
- Brown, B. A.; Stone, N. J.; Stone, J. R.
- Physical Review C, Vol. 71, Issue 4
Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides
journal, May 2001
- Raman, S.; Nestor, C. W.; Tikkanen, P.
- Atomic Data and Nuclear Data Tables, Vol. 78, Issue 1
Shell-model study of quadrupole collectivity in light tin isotopes
journal, April 2015
- Coraggio, L.; Covello, A.; Gargano, A.
- Physical Review C, Vol. 91, Issue 4
Anomalous behavior of excitations around
journal, November 2002
- Terasaki, J.; Engel, J.; Nazarewicz, W.
- Physical Review C, Vol. 66, Issue 5
Nuclear Data Sheets for A = 110
journal, March 2000
- De Frenne, D.; Jacobs, E.
- Nuclear Data Sheets, Vol. 89, Issue 3
Shell-model study of quadrupole collectivity in light tin isotopes
text, January 2015
- Coraggio, L.; Covello, A.; Gargano, A.
- arXiv
Shell model study of the isobaric chains A=50, A=51 and A=52
text, January 2000
- Poves, A.; Sanchez-Solano, J.; Caurier, E.
- arXiv
Works referencing / citing this record:
Shape coexistence and collective low-spin states in studied with the Doppler-shift attenuation coincidence technique
journal, May 2018
- Spieker, M.; Petkov, P.; Litvinova, E.
- Physical Review C, Vol. 97, Issue 5