Megachannel Pulse Height Analyzer Based on a Magnetic Drum with CAMAC Instrumentation

Tenten, W.; Reinhart, P.; Müller, Kathrin

doi:10.1109/tns.1975.4327695

Cited by 19 publications

(12 citation statements)

References 5 publications

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“…The 7 radiation which depopulates the levels of interest, was observed with an intrinsic Ge detector (1.6 cm x 19 cm2); it stopped the TAC. The data acquisition was performed with the multichannel analyzer MECCA [9]. The energy signals of the/3 and 7 detectors and the time signals from the TAC were recorded event by event on magnetic tapes.…”

Section: Resultsmentioning

confidence: 99%

Half-lives of levels in99Nb and99Mo

et al. 1982

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The half-lives of the 469-keV level in 99Nb and the 236-keV state in 99Mo have been determined to (0.21 + 0.06) ns and (0.87__ 0.15) ns, respectively, from fl, 7-delayed coincidences. Values of B(E2)=(89_+28)e 2 fmr and B(M1)=(0.017 +0.003)gg are deduced for the 469-keV transition in 99Nb and the 138-keV transition in 99Mo. The result for the E2-transition probability seems to be in accordance with the particle-core coupling interpretation of the low-lying levels in 99Nb if 98Zr is used as the core. The M1 probability for 99M0 agrees with the systematics for "/-forbidden" lgv/2-+2ds/2 neutron transitions.

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Section: Resultsmentioning

confidence: 99%

Half-lives of levels in99Nb and99Mo

et al. 1982

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“…The shortest repetition time for the switching procedure is 20 ms and, thus, the beam can be chopped with "on" and "off" times of 10 ms each or longer. The high-voltage switch controls a clock [10] which provides the one-megachannel analyzer MECCA [11] with a digitized time information. This enables 7-ray multispectra measurements where up to 256 spectra of 4,096 channels each can be registered for subsequent time windows with a width of 0.1 ms or longer.…”

Section: Methodsmentioning

confidence: 99%

A new high-spin isomer in 39 97 Y58

Lhersonneau

Weiler

Kohl

et al. 1986

Z. Physik A - Atomic Nuclei

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An isomeric state at 3,523 keV excitation energy in 97y with a half-life of 144(10) ms has been discovered with the fission-product separator JOSEF. This isomer is depopulated through a ? transition of 162 keV. An E3 multipolarity for this transition is consistent with the measured conversion coefficients of 0~K = 0.98 (20) and er = 1.00 (19). Subsequent electromagnetic transitions populate several new 97y levels which have high spins. For the isomer the three-quasiparticle configuration [gg9/2 @v(hl 1/2, g7/2)]27/2-is proposed. The E3 transition with a strength about 2 single-particle units is supposed to be of the type h+~2-*ds/~ . These findings provide evidence for the rapid shape transition 97 at A-~ 100 since they indicate shell-model character of 39Y58 even at high excitation energies while the immediate neighbour 998Y59 contains a rotational band based on a level at 495 keV.

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“…The third Ge(Li) detector of 61cm 3 was positioned under different angles with respect to the others. The data acquisition was performed with the analyzer MECCA [10] using 3 ADC's, The energy spectra of the two fixed detectors were recorded with one single ADC and the spectra of the movable detector were stored through the second ADC. The third ADC was used for the analysis of the time between the signals from the different detectors.…”

Section: Angular Correlationsmentioning

confidence: 99%

Excited 0+-levels in98Zr

et al. 1982

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New 0+-levels have been identified at 1,436 keV and 1,859 keV in 98Zr through experiments at the fission product separators OSTIS and JOSEF. Half-lives of these levels of 0.69 ns and 0.24 ns, respectively, have been determined from measurements of delayed /3, 7 coincidences. E0 transitions depopulating these 0+-levels have been observed. The results are in agreement with the assumption of shape coexistence in 98Zr.

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Megachannel Pulse Height Analyzer Based on a Magnetic Drum with CAMAC Instrumentation

Cited by 19 publications

References 5 publications

Half-lives of levels in99Nb and99Mo

Half-lives of levels in99Nb and99Mo

A new high-spin isomer in 39 97 Y58

Excited 0+-levels in98Zr

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