Now showing items 561-570 of 572
An amplifier-discriminator module for very high energy [gamma]-ray astronomy
(Elsevier, 1990-07-15)
An eight-channel amplifier-discriminator module has been developed for processing fast photomultiplier signals from a ground-based [gamma]-ray imaging telescope. The module provides several outputs for recording pulse ...
Retractable carbon fibre targets for measuring beam profiles at the SLC collision point
(Elsevier, 1989-06-15)
Retractable targets of carbon fibres with nominal diameters of 30, 7 and 4.5 [mu]m have been in use at the collision point of the SLC (the SLAC Linear Collider). The target mechanism is compatible with the Mark II detector ...
Observations on horizontal symmetries and flavor changing neutral currents
(Elsevier, 1982-04-26)
We present a detailed study of the possibility of having a horizontal gauge symmetry, in addition to SU(3)c x SU(2)L x U(1). Grand unification is not used as a constraint. We concentrate on the horizontal group SU(3)H. ...
Gamma-gamma directional correlations in 140Ce
(Elsevier, 1971-11-29)
Directional correlation measurements have been performed on six [gamma]-ray pairs occurring in the de-excitation of 140Ce. Of these, two are 1-3 correlations with an unobserved intermediate [gamma]-ray. Both NaI(T1)-Ge(Li) ...
Determination of mixing ratios from the gamma-gamma directional correlations in a triple cascade
(Elsevier, 1973-06-15)
Formulas for the determination of the three mixing ratios in a triple cascade have been derived and expressed in terms of the directional correlation coefficients of [gamma]1-[gamma]2, [gamma]2-[gamma]3 and [gamma]1-[gamma]3 ...
Energy levels of As77
(Elsevier, 1963)
The gamma rays of As77 following beta decay of were investigated using coincidence techniques. General features of the level structure were found to be in substantial agreement with the work of previous investigators. ...
The level scheme of 171Tm
(Elsevier, 1968-07-01)
The gamma-ray spectrum associated with the decay of 171Er has been studied with curved-crystal and Ge(Li) spectrometers. The data provide energy and intensity measurements of 40 gamma rays. A previously unreported weak 694 ...
The decay of 159Gd
(Elsevier, 1968-04)
Precision energy measurements on four gamma rays in the 159Gd --> 159Tb decay were performed with a 2 m curved-crystal spectrometer. Energies of the other gamma rays and all gamma intensities were determined with a ...
Energies and mixing ratios of transitions in 72Ge
(Elsevier, 1974-02-04)
The lower energy [gamma]-rays of 72Ge from the decay of 14 h 72Ga have been studied using a 2 m curved-crystal spectrometer. Mixing ratios for the 601, 630, 894 and 1051 keV transitions were determined from the [gamma]-[gamma] ...
Energy levels of Re187
(Elsevier, 1960)
The gamma rays of Re187 following beta decay of the 24-hr. W187 have been studied using prompt and delayed coincidence techniques. A total of 25 gamma rays was found. Relative intensities are given for the gamma transitions. ...