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Inner-shell electron emission process of super heavy quasi-atoms

Thesis/Dissertation ·
OSTI ID:5017114
Superheavy quasi-atoms of united atomic charge Zu = 95, 117, 127 and 171 have been studied. These heavy atoms have been produced via heavy ion collisions of Br on Nd, Pb and U, and Au on U. The beams of Br and Au were produced using the Heidelberg MP Tandem accelerator in combination with the post accelerator. Coincidence measurements have been taken of delta-electrons and x-rays, and the triple coincidences have been taken of delta-electrons, x-rays and scattered heavy ions. Angular distribution of delta electrons have been studied for the system of l on Pb. The measured double differential cross sections d/sup 2/sigma/d..cap omega..e for electron emission have been compared with theoretical calculations. Binding energy differences of K and L shells of the quasi-atoms have been obtained from the measured cross sections, and these are compared with theoretical predictions. Experimental results are not in complete agreement with theory. The impact parameter dependence of the electron emission, and of electron emission from the 1s/sub 1///sub 2/ and 2p/sub 1///sub 2/ shells the united atomic charge Zu = 171 have been studied. The angular distribution measurements indicate isotropic behavior.
Research Organization:
Vanderbilt Univ., Nashville, TN (USA)
OSTI ID:
5017114
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOMIC NUMBER
ATOMS
BINDING ENERGY
BROMINE IONS
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON EMISSION
ELEMENTS
EMISSION
ENERGY
EXPERIMENTAL DATA
GOLD IONS
HALOGENS
HEAVY IONS
INFORMATION
IODINE
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZING RADIATIONS
IONS
LEAD
METALS
NEODYMIUM
NONMETALS
NUMERICAL DATA
RADIATIONS
RARE EARTHS
URANIUM
X RADIATION