A light ion focal plane detector for the Q3D magnetic spectrograph with periodic cathode readout

doi:10.1016/0168-9002(87)90057-X

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume 258, Issue 2, 1 August 1987, Pages 201-208

https://doi.org/10.1016/0168-9002(87)90057-X Get rights and content

Abstract

For the Munich Q3D spectrograph a focal plane detector of 1.2 m length appropriate for polarized particle induced reactions has been developed. Improved position resolution of the resistive wire proportional detectors is achieved by additional readout of periodic cathode structures.

References (14)

S. Kalbitzer et al.
Nucl. Instr. and Meth.
(1967)
J.L.C. Ford
Nucl. Instr. and Meth.
(1979)
A. Chalupka et al.
Nucl. Instr. and Meth.
(1983)
W. Bertozzi
Nucl. Instr. and Meth.
(1977)
C.L. Morris
Nucl. Instr. and Meth.
(1982)
M. Matoba
Nucl. Instr. and Meth.
(1982)
Y. Fujita et al.
Nucl. Instr. and Meth.
(1983)
Y. Fujita et al.
Nucl. Instr. and Meth.
(1982)

There are more references available in the full text version of this article.

Cited by (27)

Nuclear Data Sheets for A = 41
2016, Nuclear Data Sheets
Available information pertaining to the nuclear structure of all nuclei with mass numbers A=41 ranging from Al (Z=13) to Ti (Z=22) are presented. The experimental reaction and decay data are evaluated and any inconsistencies or discrepancies are noted. The adopted values for various level properties (such as the spin, parity and and halflife) and gamma properties (energy, intensity and multipole character) are given.
Since the prior evaluation several new measurements have expanded our knowledge of A=41 nuclides. The half-life of the ground state of ⁴¹Si has been determined and a single excited state identified. Excited levels in ⁴¹P have been observed for the first time. In ⁴¹Cl, seven new excited states have been identified in deep inelastic and heavy ion transfer reactions. Half-lifes for four states in ⁴¹Ar have been updated and additional levels with gammas have been included from a new measurement using the multiple ion transfer reaction. In ⁴¹Ca via charge-exchange reaction measurements, several new excited states were observed. A number of new resonances in ⁴¹K have been identified via the (p,γ) reaction.
There remains a significant discrepancy in the half-life of the first excited state (980 keV) in ⁴¹K, with measurements differing by more than an order of magnitude. Transfer reactions suggest that this M1 transition should be l-forbidden, however, several measurements yield a lifetime which suggests a sizable M1 strength. Further measurements to resolve the current conflicts would be beneficial.
Low-spin mixed particle-hole structures in 185W
2005, Nuclear Physics A
The level structure of ¹⁸⁵W has been studied using the prompt and delayed gamma–gamma coincidences from thermal neutron capture in ¹⁸⁴W accompanied with the one-nucleon transfer reactions $(d, p)$ and $(d, t)$ with polarized beams. From these data and those of previous studies a total of 183 levels has been established for energies below 3 MeV. Many of these states have been grouped into rotational bands built on 28 intrinsic states of quasiparticle and quasiparticle-plus-phonon character. Although the DWBA analysis permitted definite spin–parity assignments for most of states a large number of particle transitions have ‘anomalous’ angular and asymmetry shapes with respect to the DWBA which indicate an influence of strong mixing between particle and hole states. The extra exchange of phonons and the significance of configurational $Δ N = \pm 2$ mixing across the Fermi surface lead to a fine structure in the fragmentation of most single-particle strengths and at the same time has the effect of breakdown of the individual properties of Nilsson states. The accumulated $l = 1$ $(d, p)$ sum is about a factor two smaller than the equivalent $(d, t)$ strength. Thus, the previously observed loss of the $(d, p)$ strength in the W nuclei with $A = 184, 185$ is presumably because of their redistribution amongst particle- and hole-type states. The observed states below 2 MeV are compared with predictions of the quasiparticle–phonon nuclear model.
Nuclear Data Sheets for A = 197
2005, Nuclear Data Sheets
The 1995 Nuclear Data Sheets for A = 197 (1995Zh27) have been updated on the basis of the experimental results from various decay and reaction studies leading to nuclides in the A = 197 mass chain since January 1995 (cutoff date of the last evaluation). The updated level schemes and decay schemes, and experimental decay and reaction data on which they are based, are summarized and presented for all nuclides with mass number A = 197. The adopted values of level energies, level spins and parities are given, and γ-ray energies, γ-ray intensities, as well as other nuclear properties are presented. The references, Jπ arguments, and necessary comments are given in the text.
Nuclear data sheets for A = 41
2001, Nuclear Data Sheets
Nuclear spectroscopic information for the known nuclides of mass 41 (Al,Si,P,S,Cl,Ar,K,Ca,Sc,Ti) has been evaluated. The principal sources of the adopted levels presented are Endt's evaluations (1990En08, 1978En02). The data sets for reactions and decays, including all available gamma--ray data, are based mostly on the original literature. There are no data available for the excited states in 41 Al, 41 Si, 41 P, 41 Cl and 41 Ti.
Study of 110Cd via the 111Cd(d, t) reaction
1992, Nuclear Physics, Section A
The reaction ¹¹¹Cd( $d$ , t)¹¹⁰Cd has been studied with an energy resolution of 5–9 keV using a 22 MeV polarized deuteron beam. Angular distributions and analysing powers for states up to ≈4.2 MeV excitation have been measured. Spin assignments, spectroscopic factors and strength distributions are deduced from DWBA calculations. Strength distributions for different j-transfers appear to be fragmented over the entire energy range. They are compared with IBA+two-quasi-particles and quasi-particle RPA calculations.
A long position angle resolving light ion detector for the Munich Q3D magnetic spectrograph
1991, Nuclear Inst. and Methods in Physics Research, A

View all citing articles on Scopus

^☆: Supported by the BMFT.

^∗∗: Guest professor at Osaka University, Japan during April and May 1986.

View full text

Article preview

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abstract

References (14)

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Cited by (27)

Nuclear Data Sheets for A = 41

Low-spin mixed particle-hole structures in <sup>185</sup>W

Nuclear Data Sheets for A = 197

Nuclear data sheets for A = 41

Study of <sup>110</sup>Cd via the <sup>111</sup>Cd(d, t) reaction

A long position angle resolving light ion detector for the Munich Q3D magnetic spectrograph

A light ion focal plane detector for the Q3D magnetic spectrograph with periodic cathode readout☆

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.