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Phys. Rev. C 60, 064623 (1999) [4 pages]

Proton scattering from the unstable neutron-rich nucleus 43Ar

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F. Maréchal1,*, T. Suomijärvi1, Y. Blumenfeld1, A. Azhari2,3,†, D. Bazin2, J. A. Brown2,‡, P. D. Cottle4, M. Fauerbach2,3,*, T. Glasmacher2,3, S. E. Hirzebruch1, J. K. Jewell4,§, J. H. Kelley1,**, K. W. Kemper4, P. F. Mantica2,5, D. J. Morrissey2,5, L. A. Riley4,††, J. A. Scarpaci1, H. Scheit2,3,‡‡, and M. Steiner2
1Institut de Physique Nucléaire, IN2P3-CNRS, 91406 Orsay, France
2National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
4Department of Physics, Florida State University, Tallahassee, Florida 32306
5Department of Chemistry, Michigan State University, East Lansing, Michigan 48824

Received 2 June 1999; published 22 November 1999

The neutron-rich argon isotope 43Ar has been studied by quasielastic and inelastic proton scattering performed in inverse kinematics. The measured inelastic angular distribution for the second excited state is in good agreement with an L=2 transition. Assuming this transition to be E2, yields a β2 value for this state of 0.25±0.03 when compared with distorted-wave Born approximation calculations. This value is comparable to the one reported for the stable isotope 40Ar. Moreover it is similar to those measured by Coulomb excitation for the neighboring even-even isotopes 42Ar and 44Ar indicating that the structure of the argon isotopes is stable as a function of neutron number.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.60.064623
DOI:
10.1103/PhysRevC.60.064623
PACS:
21.10.Re, 25.40.Cm, 25.40.Ep, 27.40.+z

*Present address: Department of Physics, Florida State University, Tallahassee, FL 32306.

†Present address: Cyclotron Institute, Texas A&M University, College Station, TX 77843.

‡Present address: Department of Physics, Millikin University, Decatur, IL 62522.

§Present address: Idaho National Engineering Laboratory, Idaho Falls, ID 83415.

**Present address: TUNL, Duke University, Durham, NC 27708.

††Present address: Department of Physics and Astronomy, Earlham College, Richmond, IN 47374.

‡‡Present address: Max Plank Institut für Kernphysik, 69029 Heidelberg, Germany.

 
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