0000000000061394

AUTHOR

Toshiyuki Murayama

showing 3 related works from this author

Systematic measurements of the bohr-weisskpf effect at isolde

1992

The hyperfine anomaly gives an insight into the coupling of spin and orbital magnetic moments in the nucleus. More precisely, the nuclear magnetization is expressible through the nuclear wave functions with which is tested not only the magnetic moment operator, but also the tensor product [s×C2]1. The experiment can then be expected to be of value in testing the nuclear structure theory. The greatest value of these measurements is gained when these are made systematically over a large number of isotopes. We propose to initiate a program at ISOLDE to measure the hyperfine anomaly systematically in the heavy alkali elements. The experimental setup to achieve, in particular, a precise measurem…

PhysicsNuclear and High Energy PhysicsMagnetic momentNuclear structureCondensed Matter PhysicsAtomic and Molecular Physics and OpticsBohr modelNuclear physicsMagnetizationsymbols.namesakeNuclear magnetic momentsymbolsPhysics::Atomic PhysicsPhysical and Theoretical ChemistryAtomic physicsAnomaly (physics)Nuclear ExperimentSpin (physics)Hyperfine structureHyperfine Interactions
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Collinear fast atomic-beam laser spectroscopy at riken garis/igisol

1992

We have constructed a fast atomic-beam collinear laser spectroscopy system connected to the on-line isotope separator facility GARIS/IGISOL at RIKEN. This system is potentially powerful in studying refractory elements. To test the system, an off-line collinear experiment was made on stable Hf isotopes produced by means of laser ablation technique. For production of radioactive Hf isotopes, the use of the inverse kinematics of a fusion reaction,9Be(166Er,xn)175-xHf, was investigated. The radioactive isotope169Hf was successfully extracted from GARIS/IGISOL and accelerated up to 30 keV.

Nuclear physicsNuclear and High Energy PhysicsAtomic beamLaser ablationIsotopeChemistryAnalytical chemistryNuclear fusionPhysical and Theoretical ChemistryCondensed Matter PhysicsSpectroscopyAtomic and Molecular Physics and OpticsHyperfine Interactions
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Velocity distribution of ion beams from the RIKEN IGISOL

1992

Abstract A direct measurement of the velocity distribution of ion beams from an ion-guide isotope separator on-line (IGISOL) was carried out at RIKEN with a technique of laser spectroscopy. The skimmer-potential and gas-cell pressure dependence of the velocity distribution were also measured. The velocity distribution was found to be about two times narrower than that estimated from the mass resolving power (MRP). It is pointed out that the velocity spread deduced from MRP is considerably overestimated at various conditions. The way of improvement to make the velocity distribution of the ion beam from the IGISOL narrower and the feasibility of fast atomic-beam collinear laser spectroscopy a…

PhysicsNuclear and High Energy PhysicsDistribution (number theory)Ion beamIsotopeSeparator (oil production)Pressure dependenceAtomic physicsNuclear ExperimentSpectroscopyInstrumentationIonNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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