THE (n,d) PICK UP REACTION OF F7/2 PROTON SHELL NUCLEI EUR 448 e

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Work performed by Istituto Nazionale di Fisica - Nucleare (I.N.F.N.)

Sezione di MUano

under the Euratom contract No. 001-60-12 MPA1

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NUCLEAR PHYSICS

Reprinted from

46 - 1963

Tir ι.'>Jiii-'Wrif'

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This document was prepared under the sponsorship of the Commission of the European

Atomic Energy Community (EURATOM).

•4. X J. Χ " X T . ■ 1 . t . 1 Í

ion, its contractors nor any person acting on their behalf :

Neither the EURATOM Commission

Make any warranty or representation, express or implied, with respect to the accuracy,

completeness, or usefulness of the information contained in this document, or t h a t the use

of any information, apparatus, method, or process disclosed in this document m a y not

infringe privately owned rights; or

2° — Assume any liability with respect to the use of, or for damages resulti:

any information, apparatus, method or process disclosed in this document.

The authors' names are listed in alphabetical order.

This reprint is intended for restricted distribution only. It reproduces,

by kind permission

of the publisher,

an article from

"NUCLEAR

PHYSICS",

46 ­ 1963, 73­77. For further copies please apply to

North­Holland

Publishing

Company ­ P.O. Box 103

—

Amsterdam,

(Netherlands).

Dieser Sonderdruck ist für eine beschränkte Verteilung bestimmt. Die

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46 ­ 1963,

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PHYSICS»,

46 ­ 1963, 73­77. Tout autre

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«NUCLEAR

PHYSICS»,

46 ­ 1963, 73­77. Ulteriori copie dell'articolo

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46 ­ 1963, 73­77. Meer exemplaren

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E U R 4 4 8 . e

R E P R I N T

T H E (n,d) PICK-UP REACTION ON f, PROTON SHELL NUCLEI by

L. COLLI, E. GADIOLI, D. LUCIONI and S. MICHELETTI. Association EURATOM - C.N.E.N.

(European Atomic Energy Community and Comitato Nazionale per l'Energia Nucleare)

Work performed by Istituto Nazionale di Fisica Nucleare (I.N.F.N.) - Sezione di Milano under the Euratom contract No. 001-60-12 MPAI

Reprinted from "NUCLEAR PHYSICS" 46 - 1963, pp. 73-77.

The angular distribution of deuterons from the reaction Fe56(n,d) Mn55 has been measured for the / = 3 transition to the ground state of Mn55. A good fit is found with DWBA calculations. A satisfactory agreement is also obtained between the experimental values of the cross section for the transition to the ground state of the final nucleus in a series of isotopes belonging to the

f7 proton shell and the theoretical values obtained from the shell model in

the j-j coupling limit by means of DWBA calculations.

E U R 4 4 8 . e

R E P R I N T

THE (n,d) PICK-UP REACTION ON f, PROTON SHELL NUCLEI by

L. COLLI, E. GADIOLI, D. LUCIONI and S. MICHELETTI. Association EURATOM - C.N.E.N.

(European Atomic Energy Community and Comitato Nazionale per l'Energia Nucleare)

Work performed by Istituto Nazionale di Fisica Nucleare (I.N.F.N.) - Sezione di Milano under the Euratom contract No. 001-60-12 MPAI

Reprinted from "NUCLEAR PHYSICS" 46 - 1963, pp. 73-77.

The angular distribution of deuterons from the reaction Fe56(n,d) Mn55 has been measured for the / = 3 transition to the ground state of Mn55. A good fit is found with DWBA calculations. A satisfactory agreement is also obtained between the experimental values of the cross section for the transition to the ground state of the final nucleus in a series of isotopes belonging to the

f7 proton shell and the theoretical values obtained from the shell model in

the j-j coupling limit by means of DWBA calculations.

E U R 4 4 8 . e

R E P R I N T

THE (n,d) PICK-UP REACTION ON f7 PROTON SHELL NUCLEI by

L. COLLI, E. GADIOLI, D. LUCIONI and S. MICHELETTI. Association EURATOM - C.N.E.N.

(European Atomic Energy Community and Comitato Nazionale per l'Energia Nucleare)

Work performed by Istituto Nazionale di Fisica Nucleare (I.N.F.N.) - Sezione di Milano under the Euratom contract No. 001-60-12 MPAI

Reprinted from "NUCLEAR PHYSICS" 46 - 1963, pp. 73-77.

The angular distribution of deuterons from the reaction Fe56(n,d) Mnõõhas been measured for the / = 3 transition to the ground state of Mn55. A good fit is found with DWBA calculations. A satisfactory agreement is also obtained between the experimental values of the cross section for the transition to the ground state of the final nucleus in a series of isotopes belonging to the

f7 proton shell and the theoretical values obtained from the shell model in

2 . E : 2.G Nuclear Physics 46 (1963) 73-77; © North-Holland Publishing Co., Amsterdam

Not to be reproduced by photoprint or microfilm without written permission from the publisher

THE (n,d) PICK-UP REACTION O N f, P R O T O N SHELL NUCLEI

2

L. COLLI t, E. G A D I O L I , S. M I C H E L E T T I t t and D. L U C I O N I

Istituto di Scienze Fisiche dell' Universita, Milano Î Received 18 December 1962

Abstract: The angular distribution of deuterons from the reaction Fe5 0(n,d) Mn5 5 has been

measured for the 1=3 transition to the ground state of Mn5 5. A good fit is found with D W B A

calculations. A satisfactory agreement is also obtained between the experimental values of the cross section for the transition to the ground state of the final nucleus in a series of isotopes belonging to the f? proton shell and the theoretical values obtained from the shell model in

the j-j coupling limit by means of DWBA calculations.

1. Introduction

The absolute values of the cross-section, together with the angular distributions

of the particles emitted, are the most important experimental data needed to

under-stand a reaction mechanism from a comparison with the theory and eventually to

determine the nuclear parameters involved. In a previous group of experiments

),

we have studied the (n,d) reaction on the nuclei between Sc

and Ni

. The intensity

of the transition leading to the ground state of the residual nucleus has been measured

for these nuclei at an average laboratory scattering angle of 15°. In order to obtain

more complete data on these reactions, we have successively undertaken the

measure-ment of the angular distribution of the emitted deuterons in the cases of Fe

and

of Fe

; we report on the latter in this paper. We have compared the complete

group of results with the predictions given by the DWBA theory as calculated by

Satchler

), finding that it gives a rather good description of the reaction mechanism.

2. Experimental Apparatus and Results

The measurement of the angular distribution of deuterons from the reaction

Fe

(n, d)Mn

has been made with the apparatus described in the preceeding

papers

-

). Neutrons of 14 MeV energy, obtained by the reaction D + T are used

to bombard the target of the Fe

isotope, and the emitted deuterons are counted

and analysed in energy by means of a telescope of proportional and scintillation

counters. Other charged particles than the deuterons are excluded by means of the

usual energy-energy loss technique.

The peak of deuterons corresponding to the transition to the ground state of the

t and Laboratori C.[.S.E., Milano, t t and I . N . F . N . , Sezione di Milano.

* Work done under the research Contract Euratom-CNEN.

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