On the timing properties of germanium detectors: The centroid diagrams of prompt photopeaks and compton events

Penev, I.; Andrejtscheff, W.; Protochristov, Ch.; Zhelev, Zh.

doi:10.1016/0168-9002(87)90748-0

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…The energy and efficiency calibrations of the Ge detectors were carried out with ~33Ba and ~S2Eu sources placed at the target position. Refer to [21] for further details concerning the loss of 7-ray intensity due to the finite time resolution of the detectors. The 162 ~ detector enabled us to search for Doppler-broadened lineshapes or transitions from short lived states.…”

Section: The 2584 Kev Isomermentioning

confidence: 99%

Identification and structure of high spin particle-hole states in89Mo

Weiszflog

Rudolph

Gross

et al. 1993

Z. Physik A - Hadrons and Nuclei

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Abstract. Particle-T7 and 7y-coincidences of the reaction 58Ni(36Ar, 4pn)89Mo have been used to gain more information about high spin states in 89Mo and to establish the yrast sequence up to 7.6 MeV excitation energy and probable spin 37/2 h. Spins and parities were assigned on the basis of DCO-ratios measured with the OSIRIS spectrometer and a large volume Ge detector placed at 162 ~ to the beam. Furthermore, a y-ray angular distribution experiment was carried out using the reaction 58Ni(3sC1, 3 p n)89Mo. As in the neighboring isotopes 88Mo and 9~ the positive-parity high-spin states can be grouped into shell model multiplets characterized by increasing seniorities of proton particles and neutron holes in the 1 g9/2 shell. The negative-parity states can be explained with one nucleon moving in the Pl/2 orbit. The energies and wave functions of these states have been deduced by means of the shell model code RITSSCHIL. The 2584 keV (21/2 +) is an isomeric state the mean life of which has been estimated from delayed 77-coincidences.

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Section: The 2584 Kev Isomermentioning

confidence: 99%

Identification and structure of high spin particle-hole states in89Mo

Weiszflog

Rudolph

Gross

et al. 1993

Z. Physik A - Hadrons and Nuclei

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A study of high spin states in the transitional nucleus90Mo

Kabadiyski

Cristancho

Gross

et al. 1992

Z. Physik A - Hadrons and Nuclei

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The reaction 58Ni(36Ar, 4p)9~has been studied at a beam energy of 149 MeV. A detector array consisting of the OSIRIS spectrometer (12 Compton-suppressed Ge detectors), four charged-particle AE detectors and seven NE-213 neutron detectors at the VICKSI accelerator in Berlin has been used to measure the gamma radiation in 77-and particle-77-coincidence mode. An additional Ge detector was placed at 162 ~ to the beam direction to provide information on DCO ratios. The level scheme of 9~ has been extended up to an excitation energy of about 12 MeV and probable spin 23ta. Some 70 transitions and 40 levels have been newly identified. Spin assignments have been proposed on the basis of measured DCO ratios. Shell model calculations in a model space consisting of the proton lf5/2, 2p3/2, 2pl/2, and 1 g9/2 orbits and the neutron 2pl/2, 1 g9/2, 1 g7/2, 2 d5/2, 2d3/a, and 3 Sl/2 orbits with some truncation were made for states above 9h and the predicted structure of these states is discussed.

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