Seminarium Fizyki Jądra Atomowego
sala 1.01, ul. Pasteura 5
2019-06-13 (10:15) 
dr Bradley Cheal (Uniwersytet w Liverpool, Wielka Brytania)
Studying Nuclear Sizes and Shapes with Laser Spectroscopy
Laser spectroscopy provides model-independent measurements of nuclear ground and isomeric state properties. These include the nuclear spin, magnetic dipole and electric quadrupole moments and the mean-square charge radii. Such quantities provide a sensitive probe of both single-particle and collective phenomena.
At the JYFL IGISOL (Finland) thin foil targets enable the production of radioactive isotope beams for elements not available elsewhere. Extraction from the point of production in the target takes place in under a millisecond regardless of the physical and chemical properties. High resolution collinear laser spectroscopy is then performed in-flight.
One area of study has been the A~100 region, where a sudden onset of deformation is seen with increasing neutron number. This effect is seen to be maximised in the yttrium chain, where a shape coexistence is observed at the critical point. Recent measurements last month have shown the story is not quite what it seemed.
At the JYFL IGISOL (Finland) thin foil targets enable the production of radioactive isotope beams for elements not available elsewhere. Extraction from the point of production in the target takes place in under a millisecond regardless of the physical and chemical properties. High resolution collinear laser spectroscopy is then performed in-flight.
One area of study has been the A~100 region, where a sudden onset of deformation is seen with increasing neutron number. This effect is seen to be maximised in the yttrium chain, where a shape coexistence is observed at the critical point. Recent measurements last month have shown the story is not quite what it seemed.