The 154Eu(t, p) reaction: Some new systematics in the N = 90 spherical-deformed transition region

R. G. Lanier; R. K. Sheline; G. L. Struble; L. G. Mann; J. A. Cizewski

doi:10.1016/0375-9474(84)90373-7

The ¹⁵⁴Eu(t, p) reaction: Some new systematics in the N = 90 spherical-deformed transition region

R. G. Lanier, R. K. Sheline, G. L. Struble, L. G. Mann, J. A. Cizewski

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

A radioactive target of ¹⁵⁴Eu(8.3y) has been used to study the ¹⁵⁴Eu(t, p)¹⁵⁶Eu reaction at an incident energy of 17 MeV. The bandhead and one rotational state of the {;π 5 2[413]; ν 11 2[505]}_{K = 3^-} configuration have been identified in ¹⁵⁶Eu. The excitation energy of the 3^- bandhead is determined to be 448 ± 15 keV. The angular distribution of the first excited rotational state is anamolous and may indicate evidence for a strong two-step component in the reaction mechanism. The energy systematics of the Eu-Sm transition region are also investigated. We find that the systematics of h {combining short stroke overlay}² 2I suggest that at N = 87 the ¹⁵⁰Eu {π 5 2[413]; ν 11 2[505]}_{K = 3^-} excited configurations has a significantly more stable deformed structure than the corresponding 11 2[505] one-quasiparticle structure in ¹⁴⁹Sm.

Original language	English (US)
Pages (from-to)	236-246
Number of pages	11
Journal	Nuclear Physics, Section A
Volume	413
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(84)90373-7
State	Published - Jan 30 1984
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

Nuclear reactions
Nuclear structure

Access to Document

10.1016/0375-9474(84)90373-7

Cite this

@article{f9f4f38f8ec84d8ea80192b47b8bb063,

title = "The 154Eu(t, p) reaction: Some new systematics in the N = 90 spherical-deformed transition region",

abstract = "A radioactive target of 154Eu(8.3y) has been used to study the 154Eu(t, p)156Eu reaction at an incident energy of 17 MeV. The bandhead and one rotational state of the {;π 5 2[413]; ν 11 2[505]}K = 3- configuration have been identified in 156Eu. The excitation energy of the 3- bandhead is determined to be 448 ± 15 keV. The angular distribution of the first excited rotational state is anamolous and may indicate evidence for a strong two-step component in the reaction mechanism. The energy systematics of the Eu-Sm transition region are also investigated. We find that the systematics of h {combining short stroke overlay}2 2I suggest that at N = 87 the 150Eu {π 5 2[413]; ν 11 2[505]}K = 3- excited configurations has a significantly more stable deformed structure than the corresponding 11 2[505] one-quasiparticle structure in 149Sm.",

keywords = "Nuclear reactions, Nuclear structure",

author = "Lanier, {R. G.} and Sheline, {R. K.} and Struble, {G. L.} and Mann, {L. G.} and Cizewski, {J. A.}",

note = "Funding Information: This work was performedu nder the auspiceso f the US Departmento f Energy by the LawrenceL ivermore National Laboratory under contract numberW -7405-ENG-48, and under contract PHY79-08395 between the National Science Foundation and the Florida StateU niversity.",

year = "1984",

month = jan,

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doi = "10.1016/0375-9474(84)90373-7",

language = "English (US)",

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journal = "Nuclear Physics, Section A",

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T1 - The 154Eu(t, p) reaction

T2 - Some new systematics in the N = 90 spherical-deformed transition region

AU - Lanier, R. G.

AU - Sheline, R. K.

AU - Struble, G. L.

AU - Mann, L. G.

AU - Cizewski, J. A.

N1 - Funding Information: This work was performedu nder the auspiceso f the US Departmento f Energy by the LawrenceL ivermore National Laboratory under contract numberW -7405-ENG-48, and under contract PHY79-08395 between the National Science Foundation and the Florida StateU niversity.

PY - 1984/1/30

Y1 - 1984/1/30

N2 - A radioactive target of 154Eu(8.3y) has been used to study the 154Eu(t, p)156Eu reaction at an incident energy of 17 MeV. The bandhead and one rotational state of the {;π 5 2[413]; ν 11 2[505]}K = 3- configuration have been identified in 156Eu. The excitation energy of the 3- bandhead is determined to be 448 ± 15 keV. The angular distribution of the first excited rotational state is anamolous and may indicate evidence for a strong two-step component in the reaction mechanism. The energy systematics of the Eu-Sm transition region are also investigated. We find that the systematics of h {combining short stroke overlay}2 2I suggest that at N = 87 the 150Eu {π 5 2[413]; ν 11 2[505]}K = 3- excited configurations has a significantly more stable deformed structure than the corresponding 11 2[505] one-quasiparticle structure in 149Sm.

AB - A radioactive target of 154Eu(8.3y) has been used to study the 154Eu(t, p)156Eu reaction at an incident energy of 17 MeV. The bandhead and one rotational state of the {;π 5 2[413]; ν 11 2[505]}K = 3- configuration have been identified in 156Eu. The excitation energy of the 3- bandhead is determined to be 448 ± 15 keV. The angular distribution of the first excited rotational state is anamolous and may indicate evidence for a strong two-step component in the reaction mechanism. The energy systematics of the Eu-Sm transition region are also investigated. We find that the systematics of h {combining short stroke overlay}2 2I suggest that at N = 87 the 150Eu {π 5 2[413]; ν 11 2[505]}K = 3- excited configurations has a significantly more stable deformed structure than the corresponding 11 2[505] one-quasiparticle structure in 149Sm.

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