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Title: Radiochemical study of the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions 10% above the Coulomb barrier

Abstract

In this paper, the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions at 262 MeV (center of target) was investigated by using a stacked-foil technique and radiochemical separations of trans-curium elements. Trans-curium isotopes were identified by α-particle spectroscopy. For Fm isotopes, by comparing the centroids of the measured post-neutron emission isotope distributions with the most probable primary mass number predicted by Volkov's generalized Q g g systematics, the missing mass (number of evaporated neutrons) is estimated. The latter is compared with that deduced from the measured centroid of the laboratory angular distribution peaked closely to the grazing angle and the centroid of the range distribution, being used to determine the average total kinetic energy loss (TKEL) and the average excitation energy. The latter agrees within the uncertainties with the missing mass so that a consistent picture of the reaction mechanism emerges. For products closer to the target Z, e.g., Cf and Bk, the distributions of kinetic energies are much broader than for Fm, reflecting the fact that in the former, values of TKEL reach from quasi-elastic scattering all the way to deep inelastic scattering. Finally, the measured laboratory angular distribution and the average laboratory kinetic energy of the Fm isotopes, being the prototypes for multi-nucleon transfer products, are benchmark values for the design of electromagnetic separators to be constructed for the separation and detection of unknown neutron-rich transactinides produced in this nuclear reaction type.

Authors:
 [1];  [1];  [2];  [3];  [2];  [4];  [2];  [2];  [5];  [1];  [1];  [1];  [1];  [6];  [1];  [6];  [7];  [4];  [6];  [1] more »;  [8];  [3];  [6];  [8];  [1];  [6];  [1];  [7];  [7] « less
  1. Johannes Gutenberg Univ. Mainz (Germany). Inst. of Nuclear Chemistry
  2. Johannes Gutenberg Univ. Mainz (Germany). Inst. of Nuclear Chemistry; Helmholtz Inst. Mainz (Germany)
  3. Johannes Gutenberg Univ. Mainz (Germany). Inst. of Nuclear Chemistry; GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany); Helmholtz Inst. Mainz (Germany)
  4. Johannes Gutenberg Univ. Mainz (Germany). Inst. of Nuclear Chemistry; GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany)
  5. GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany); Japan Atomic Energy Agency (JAEA), Tokai (Japan). Advanced Science Research Center
  6. GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany)
  7. GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany); Helmholtz Inst. Mainz (Germany)
  8. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Johannes Gutenberg Univ. Mainz (Germany); Helmholtz Inst. Mainz (Germany); GSI Helmholtz Centre for Heavy-Ion Research, Darmstadt (Germany)
Sponsoring Org.:
USDOE; Helmholtz Inst. Mainz (HIM) (Germany)
OSTI Identifier:
1465269
Report Number(s):
LLNL-JRNL-748468
Journal ID: ISSN 0375-9474; 933648; TRN: US1902460
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
Journal Volume: 961; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; multi-nucleon transfer reactions; production of heavy actinides; angular distributions; recoil ranges; fragment kinetic energies; total kinetic energy losses (TKEL)

Citation Formats

Götz, M., Götz, S., Kratz, J. V., Düllmann, Ch. E., Mokry, Ch., Runke, J., Thörle-Pospiech, P., Wiehl, N., Schädel, M., Ballof, J., Dorrer, H., Grund, J., Huber, D., Jäger, E., Keller, O., Krier, J., Khuyagbaatar, J., Lens, L., Lommel, B., Mendel, M., Moody, K. J., Scharrer, P., Schausten, B., Shaughnessy, D., Schmitt, M., Steiner, J., Trautmann, N., Yakushev, A., and Yakusheva, V. Radiochemical study of the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions 10% above the Coulomb barrier. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.02.006.
Götz, M., Götz, S., Kratz, J. V., Düllmann, Ch. E., Mokry, Ch., Runke, J., Thörle-Pospiech, P., Wiehl, N., Schädel, M., Ballof, J., Dorrer, H., Grund, J., Huber, D., Jäger, E., Keller, O., Krier, J., Khuyagbaatar, J., Lens, L., Lommel, B., Mendel, M., Moody, K. J., Scharrer, P., Schausten, B., Shaughnessy, D., Schmitt, M., Steiner, J., Trautmann, N., Yakushev, A., & Yakusheva, V. Radiochemical study of the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions 10% above the Coulomb barrier. United States. https://doi.org/10.1016/j.nuclphysa.2017.02.006
Götz, M., Götz, S., Kratz, J. V., Düllmann, Ch. E., Mokry, Ch., Runke, J., Thörle-Pospiech, P., Wiehl, N., Schädel, M., Ballof, J., Dorrer, H., Grund, J., Huber, D., Jäger, E., Keller, O., Krier, J., Khuyagbaatar, J., Lens, L., Lommel, B., Mendel, M., Moody, K. J., Scharrer, P., Schausten, B., Shaughnessy, D., Schmitt, M., Steiner, J., Trautmann, N., Yakushev, A., and Yakusheva, V. 2017. "Radiochemical study of the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions 10% above the Coulomb barrier". United States. https://doi.org/10.1016/j.nuclphysa.2017.02.006. https://www.osti.gov/servlets/purl/1465269.
@article{osti_1465269,
title = {Radiochemical study of the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions 10% above the Coulomb barrier},
author = {Götz, M. and Götz, S. and Kratz, J. V. and Düllmann, Ch. E. and Mokry, Ch. and Runke, J. and Thörle-Pospiech, P. and Wiehl, N. and Schädel, M. and Ballof, J. and Dorrer, H. and Grund, J. and Huber, D. and Jäger, E. and Keller, O. and Krier, J. and Khuyagbaatar, J. and Lens, L. and Lommel, B. and Mendel, M. and Moody, K. J. and Scharrer, P. and Schausten, B. and Shaughnessy, D. and Schmitt, M. and Steiner, J. and Trautmann, N. and Yakushev, A. and Yakusheva, V.},
abstractNote = {In this paper, the kinematics of multi-nucleon transfer reactions in 48Ca + 248Cm collisions at 262 MeV (center of target) was investigated by using a stacked-foil technique and radiochemical separations of trans-curium elements. Trans-curium isotopes were identified by α-particle spectroscopy. For Fm isotopes, by comparing the centroids of the measured post-neutron emission isotope distributions with the most probable primary mass number predicted by Volkov's generalized Qgg systematics, the missing mass (number of evaporated neutrons) is estimated. The latter is compared with that deduced from the measured centroid of the laboratory angular distribution peaked closely to the grazing angle and the centroid of the range distribution, being used to determine the average total kinetic energy loss (TKEL) and the average excitation energy. The latter agrees within the uncertainties with the missing mass so that a consistent picture of the reaction mechanism emerges. For products closer to the target Z, e.g., Cf and Bk, the distributions of kinetic energies are much broader than for Fm, reflecting the fact that in the former, values of TKEL reach from quasi-elastic scattering all the way to deep inelastic scattering. Finally, the measured laboratory angular distribution and the average laboratory kinetic energy of the Fm isotopes, being the prototypes for multi-nucleon transfer products, are benchmark values for the design of electromagnetic separators to be constructed for the separation and detection of unknown neutron-rich transactinides produced in this nuclear reaction type.},
doi = {10.1016/j.nuclphysa.2017.02.006},
url = {https://www.osti.gov/biblio/1465269}, journal = {Nuclear Physics. A},
issn = {0375-9474},
number = ,
volume = 961,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}

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Works referenced in this record:

New ideas on the production of heavy and superheavy neutron rich nuclei
journal, March 2010


Extension of the Periodic System: Superheavy, Superneutronic, Superstrange, Antimatter Nuclei
journal, March 2010


Reexamining the heavy-ion reactions 238 U+ 238 U and 238 U+ 248 Cm and actinide production close to the barrier
journal, November 2013


IRiS—Exploring new frontiers in neutron-rich isotopes of the heaviest elements with a new Inelastic Reaction Isotope Separator
journal, October 2011

  • Dvorak, J.; Block, M.; Düllmann, Ch. E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 652, Issue 1
  • https://doi.org/10.1016/j.nima.2010.08.124

Isotope Distributions in the Reaction of U 238 with U 238
journal, August 1978


Actinide Production in Collisions of U 238 with Cm 248
journal, March 1982


The Search for Superheavy Elements
journal, June 1983


Transfer cross sections from reactions with Es 254 as a target
journal, April 1986


NZ-equilibration and nucleon exchange in dissipative heavy-ion collisions
journal, April 1984


Synthesis of superheavy nuclei: A search for new production reactions
journal, September 2008


Production of heavy and superheavy neutron-rich nuclei in transfer reactions
journal, April 2011


The heavy-ion magnetic spectrometer PRISMA
journal, April 2002


VAMOS: A variable mode high acceptance spectrometer for identifying reaction products induced by SPIRAL beams
journal, May 2003


Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator – Stopping range determination
journal, January 2010

  • Wittwer, D.; Abdullin, F. Sh.; Aksenov, N. V.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 268, Issue 1
  • https://doi.org/10.1016/j.nimb.2009.09.062

Binary theory of light-ion stopping
journal, June 2002


Binary theory of electronic stopping
journal, October 2002


Energy losses of 252Cf fission fragments in thin foils
journal, July 2006

  • Knyazheva, G. N.; Khlebnikov, S. V.; Kozulin, E. M.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 248, Issue 1
  • https://doi.org/10.1016/j.nimb.2006.04.071

Empirical stopping power tables for ions from 3Li to 18Ar and from 0.001 to 1000MeV/nucleon in solids and gases
journal, November 2003


A comparison of recent stopping power tables for light and medium-heavy ions with experimental data, and applications to radiotherapy dosimetry
journal, June 2006


Range and stopping-power tables for heavy ions
journal, January 1970


Energy loss and energy loss straggling of fast heavy ions in matter
journal, March 1982


Range profiles for (0.15-10)-MeV/u uranium ions in solids
journal, October 1982


Stopping powers and ranges for the heaviest atoms
journal, December 2015

  • Sagaidak, Roman N.; Utyonkov, Vladimir K.; Dmitriev, Sergey N.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 365
  • https://doi.org/10.1016/j.nimb.2015.09.086

Energy Loss and Effective Charge of Heavy Ions in Aluminum
journal, December 1960


Passage of Heavy Ions Through Matter
journal, December 1963


Charge-dependent electronic stopping of swift nonrelativistic heavy ions
journal, November 1997


ESTIMATION ON STOPPING POWERS OF SUPERHEAVY ION WITH Z =120 AND A =300 IN SEVERAL MEDIA
journal, June 2010


High intensity target wheel at TASCA: target wheel control system and target monitoring
journal, July 2013


Preparation of actinide targets for the synthesis of the heaviest elements
journal, July 2013


Excitation functions for production of heavy actinides from interactions of Ca 40 and Ca 48 ions with Cm 248
journal, May 1985


Production of cold target-like fragments in the reaction of Ca 48 + 248 Cm
journal, June 1986


Actinide production from the interactions of Ca 40 and Ca 44 with Cm 248 and a comparison with the Ca 48 + 248 Cm system
journal, October 1992


Quasi-fission — The mass-drift mode in heavy-ion reactions
journal, July 1985


Works referencing / citing this record:

The Synthesis of New Neutron-Rich Heavy Nuclei
journal, March 2019