Production of radioactive targets for use in high-resolution, Charged-particle reaction spectroscopy

doi:10.1016/0029-554X(78)90616-X

Nuclear Instruments and Methods

Volume 153, Issue 1, 1 July 1978, Pages 53-58

https://doi.org/10.1016/0029-554X(78)90616-X Get rights and content

Abstract

Radioactive targets for use in charged-particle reaction spectroscopy must be chemically pure, monoisotopic, uniform, thin, and must have small dimensions in order to minimize the total radioactivity. In this paper we discuss isotope-separation techniques that permit fabrication of such targets with half-lives as short as ten days. We show results from a proton inelastic-scattering experiment, using a target we fabricated from 13 y ¹⁵²Eu.

References (4)

J. Lerner
Nucl. Instr. and Meth.
(1972)
P.G. Johnson et al.
Nucl. Instr. and Meth.
(1973)

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Cited by (6)

The 154Eu(t, p) reaction: Some new systematics in the N = 90 spherical-deformed transition region
1984, Nuclear Physics, Section A
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 ${;π 52 [413]; ν 112 [505]}_{K = 3^{−}}$ 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 $h ̵^{2} 2 I$ suggest that at N = 87 the ¹⁵⁰Eu ${π 52 [413]; ν 112 [505]}_{K = 3^{−}}$ excited configurations has a significantly more stable deformed structure than the corresponding $112 [505]$ one-quasiparticle structure in ¹⁴⁹Sm.
The 249Bk(p, t)247Bk reaction
1983, Nuclear Physics, Section A
The ²⁴⁹Bk(p, t)²⁴⁷Bk reaction was performed with a 15 MeV proton beam from the Princeton University AVF cyclotron. The outgoing tritons were magnetically analyzed by a QDDD spectrometer. A DWBA analysis was performed, and a good L = 0 angular distribution was observed populating the $72^{+} [633]$ bandhead in ²⁴⁷Bk. Levels up to the $152$ member of this rotational band were populated at 41, 84, 137, 196 and 265 keV. No other peaks were observed. The absence of strength in the $52^{+} [642]$ band is shown to be consistent with the degree of mixing expected from calculation of the Coriolis interaction. The ground state of ²⁴⁹Bk is discussed in terms of the gap in the neutron Nilsson levels at N = 152.
Evidence for a strongly deformed prolate shape at N = 87 from 154Eu and 152Eu(p, t) reactions
1981, Physics Letters B
The 176Lu(t,p)178Lu reaction. The influence of shell gaps and blocking on L = 0 strength
1981, Physics Letters B
The ¹⁷⁶Lu(t, p)¹⁷⁸Lu reaction shows two levels, at 98±40 and 1329±40 KeV, which are strongly populated by L = 0 transitions. The ratio of intensities for these two states is 0.85. This is larger than any comparable ratio of two-neutron transfer strengths in the rare-earth or actinide regions of deformation. Yet the cross sections are nearly a factor of two smaller than cross sections for comparable states in even-even nuclei. The explanation of our results requires a detailed analysis of both the shape and pairing degrees of freedom.
Evidence for nuclear shape coexistence at N=88: Eu152(d, p) and (d, t) reactions
1980, Physical Review C
Proton inelastic scattering at 12 MeV on Eu154
1979, Physical Review C

^☆: This work was performed under the auspices of the U.S. Department of Energy under contract no. W-7405-Eng-48.

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Nuclear Instruments and Methods

Abstract

References (4)

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Cited by (6)

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

The <sup>249</sup>Bk(p, t)<sup>247</sup>Bk reaction

Evidence for a strongly deformed prolate shape at N = 87 from <sup>154</sup>Eu and <sup>152</sup>Eu(p, t) reactions

The <sup>176</sup>Lu(t,p)<sup>178</sup>Lu reaction. The influence of shell gaps and blocking on L = 0 strength

Evidence for nuclear shape coexistence at N=88: Eu152(d, p) and (d, t) reactions

Proton inelastic scattering at 12 MeV on Eu154

Production of radioactive targets for use in high-resolution, Charged-particle reaction spectroscopy☆

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.