The 20Ne+159Tb reaction studied with the KX-ray method at 15 MeVNucleon

doi:10.1016/0375-9474(91)90289-I

Nuclear Physics A

Volume 526, Issue 2, 29 April 1991, Pages 303-345

https://doi.org/10.1016/0375-9474(91)90289-I Get rights and content

Abstract

Employing the KX-ray method, in which coincidences are measured between projectile-like fragments (PLF) and the characteristic KX rays from the target-like fragments (TLF), partial cross sections $d σ-(Z_{PLF}, Z_{TLF})/ d Ω_{PLF}$ were obtained for the ²⁰Ne+ ¹⁵⁹Tb reaction at E_lab = 294 MeV for both the quasi-elastic (QE) and the deep-inelastic (DI) components. By in addition measuring triple coincidences with charged particles at back angles the results could be corrected for charged particle evaporation from the TLF. Primary PLF cross sections were reconstructed for both components and the corresponding probabilities for sequential charged particle decay of the fragments were deduced. The very different behaviour of the QE and DI components will be discussed. As in a previous study of the ¹⁴N+¹⁵⁹Tb reaction large cross sections are observed for channels in which only nucleons and α-particles are emitted. Statistical model calculations were performed to deduce the excitation energy distribution of the primary PLF's. Comparison with other methods to reconstruct primary cross sections are made. The predictions of several models are evaluated.

References (63)

J. Wilczynski et al.
Nucl. Phys.
(1982)
R.H. Siemssen et al.
Phys. Lett.
(1985)
G.J. Balster et al.
Nucl. Phys.
(1987)
G.J. Balster et al.
Nucl. Phys.
(1987)
G.J. Balster et al.
Nucl. Phys.
(1987)
H.W. Wilschut et al.
Phys. Lett.
(1983)
H. Homeyer et al.
Z. Phys.
(1984)
M. Bürgel et al.
Phys. Rev.
(1987)
S.B. Gazes et al.
Phys. Rev.
(1988)
A. Chbihi, L.G. Sobotka, Z. Majka, D.G. Sarantites, D.W. Stracner, Z. Abenante, T.M. Semkow, N.G. Nicolis, D.C....
K. Möhring et al.
Phys. Lett.
(1988)
V.V. Kamanin et al.
Nucl. Phys.
(1984)

J.A. Pinston et al.

Phys. Lett.

(1986)

E.E. Koldenhof et al.

KVI Annual Report

(1986)

G.J. Balster et al.

Z. Phys.

(1985)

D.E. Fields et al.

Phys. Lett.

(1989)

L.G. Sobotka et al.

Phys. Rev. Lett.

(1983)

K. Kikuchi et al.

Nuclear matter and nuclear reactions

(1968)

D.K. Srivastava et al.

Phys. Lett.

(1988)

D. Hilscher et al.

Phys. Rev.

(1987)

W. Terlau et al.

Z. Phys.

(1988)

J.L. Wile et al.

Phys. Rev.

(1989)

H. Takai et al.

Phys. Rev.

(1988)

D.G. Sarantites et al.

W.A. Friedman

Phys. Rev.

(1983)

B.G. Harvey

Nucl. Phys.

(1985)

H.W. Wilschut,...

I.M. Brancus

Internal Report KfK 4453

(1988)

Int. Conf. on heavy ion nuclear collisions in the Fermi energy domain

J. de Phys. Colloque

(1986)

R.K. Bhowmik et al.

Nucl. Phys.

(1982)

J. Uckert et al.

Phys. Lett.

(1988)

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¹: Present address: Paul Scherrer Institut, Villigen, Switzerland.

²: Present address: Shell Research Laboratory, Amsterdam, The Netherlands.

³: Present address: The Institute of Modern Physics, Academia Sinica, Lanzhou, China.

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