A high energy beta spectrometer using an intrinsic germanium crystal in a super-conducting solenoid

Moore, Robert B.; Hayakawa, Satoshi; Rehfield, D.

doi:10.1016/0029-554x(76)90430-4

Cited by 28 publications

(5 citation statements)

References 17 publications

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“…In the fi+-7 coincidence measurements, the gamma-rays were collected with a Ge(Li) detector while the positrons were detected using an intrinsic germanium detector operated in the bore of a superconducting solenoid. The details of this fl-ray spectrometer are given elsewhere [25]. A AE-E plastic detector telescope employed in some of our previous studies [7,8,[12][13][14] was also used in a fi+-7 coincidence experiment in order to confirm the results obtained using the superconducting fi-ray spectrometer.…”

Section: Experimental Methods and Techniquesmentioning

confidence: 98%

Structure of even-even138Nd from the decay of138Pm

1981

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The structure of 13SNd is investigated through the fi+-decay of 138pm, whose decay half-life is measured to be 3.24_+0.05 min. A level structure comprising 27 excited states and 52 transitions is constructed. With the help of deduced ft values and internal conversion coefficients, spin-parity assignments are made to many states in 138Nd and to the ground states of 138pm. From the positron end-point energy measurement, the total decay energy is determined to be 5.4 +_0.2 MeV, which is compared with the predictions of several mass formulae and with the decay energy systematics of the N = 77 isotones. The structure of 138Nd is discussed in the light of nuclear systematics of the N = 78 isotones.

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Section: Experimental Methods and Techniquesmentioning

confidence: 98%

Structure of even-even138Nd from the decay of138Pm

1981

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“…The calibration curve thus obtained extends to E~, = 10 MeV. All fl+ studies were carried out using the superconducting fl-spectrometer facility at this Laboratory [23]. This device uses the high magnetic field of a superconducting solenoid (B~-6T) to direct incoming electrons into an intrinsic Ge detector placed within the solenoid's bore, and is particularly wellsuited for /~-7 coincidence work at high counting rates.…”

Section: Methodsmentioning

confidence: 99%

The decay of78g Rb and78m Rb to levels in78Kr

et al. 1981

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An investigation of the beta decay of 78Rb to levels in VSKr has been carried out, and a detailed level scheme is proposed. The half-lives of 7SgRb and vS"Rb have been measured to be 17.66+0.08m and 5.74_+0.05m, respectively. It has been possible to deduce percentage feedings and logft values separately for the ground state and isomeric decays. The spectroscopic studies favour a J~=0 + assignment for the 7SRb ground state, and 4-for the isomeric level. This implies that the 7SgRb--* VS~Kr decay is isospin forbidden.

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“…The fi-7 coincidence measurements were made using a superconducting fi-ray spectrometer with an intrinsic Ge crystal and a Ge(Li) 7-ray detector. The operation and characteristics of the fi-ray spectrometer can be found elsewhere [9].…”

Section: Experimental Methodsmentioning

confidence: 99%

The decay of 26-s 94Rh and 71-s 94Rh isomers

Oxorn

Singh²,

Mark³

1980

Z Physik A

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The structure of 94Ru is investigated through the beta decay of two isomers of 94Rh, and whose half-lives are measured to be 25.8+0.2 s and 70.6_+0.6 s respectively. The decay properties are studied by means of beta and gamma spectroscopy techniques. The level structure of 94Ru populated in the decays of both isomers is proposed with deduced J= values. The/~-decay energy for 71-s 94Rh is measured to be 10.0_+0.4 MeV.The structure is discussed in terms of shell model.

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A high energy beta spectrometer using an intrinsic germanium crystal in a super-conducting solenoid

Cited by 28 publications

References 17 publications

Structure of even-even138Nd from the decay of138Pm

Structure of even-even138Nd from the decay of138Pm

The decay of78g Rb and78m Rb to levels in78Kr

The decay of 26-s 94Rh and 71-s 94Rh isomers

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