Gamma-ray angular correlations

Book · Tue Dec 31 23:00:00 EST 1974

OSTI ID:7354438

Gill, R D

The observation of the angular correlations of gamma rays has proved to be one of the most useful ways of determining the properties of excited nuclear states. Many nuclear spins and parities have been determined in this way, and much nuclear structure information has been obtained from the measurement of the multipole mixing ratios of the gamma-ray transitions. In this work, the necessary theoretical methods for understanding such experiments are developed from elementary electromagnetic and quantum theory in such a way that angular correlations from the most simple to the most complicated can be readily treated. The first three chapters are self-contained and present the theory which accounts for the correlations from states with axial symmetry; the succeeding chapters introduce density matrix methods, so that states with no particular symmetries may be treated. Examples are also given of how the theory might apply to experiments in the various different cases. In the last chapter, a brief discussion is included of the interpretation of the results of experimental observations and measurements in terms of simple models of the structure of the nuclear states involved. 31 figures, 11 tables.

• OSTI ID: 7354438
• Country of Publication: United States
• Language: English

Related Subjects

651723* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
ANGULAR MOMENTUM
AXIAL SYMMETRY
CORRELATIONS
DENSITY MATRIX
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
GAMMA RADIATION
IONIZING RADIATIONS
MATRICES
MEASURING METHODS
MIXING RATIO
MULTIPOLARITY
NUCLEAR STRUCTURE
NUCLEI
PARITY
PARTICLE PROPERTIES
RADIATIONS
SPIN
SYMMETRY