Cross-shell excitation in two-proton knockout: Structure of Ca-52

Gade, A.; Janssens, R.V.F.; Bazin, D.; Broda, R.; Brown, B.Alex; Campbell, C.M.; Carpenter, M.P.; Cook, J.M.; Deacon, A.N.; Dinca, D.-C.

doi:10.1103/PhysRevC.74.021302

Cross-shell excitation in two-proton knockout: Structure of Ca-52

A. Gade
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
R.V.F. Janssens
(
- Argonne, PHY
)
,
D. Bazin
,
R. Broda
,
B.Alex Brown

Jun, 2006

5 pages

Published in:

Phys.Rev.C 74 (2006) 021302

e-Print:

nucl-ex/0606033 [nucl-ex]

DOI:

10.1103/PhysRevC.74.021302

View in:

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reference search126 citations

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Abstract: (arXiv)

The two-proton knockout reaction

^9

Be(

^{54}

Ti,

^{52}

Ca

+ \gamma

) has been studied at 72 MeV/nucleon. Besides the strong feeding of the

^{52}

Ca ground state, the only other sizeable cross section proceeds to a 3

^-

level at 3.9 MeV. There is no measurable direct yield to the first excited 2

^+

state at 2.6 MeV. The results illustrate the potential of such direct reactions for exploring cross-shell proton excitations in neutron-rich nuclei and confirms the doubly-magic nature of

^{52}

Ca.

21.60.Cs
23.20.Lv
27.40.+z
24.50.+g

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