Search for spontaneous position production in heavy ion-atom collisions
Thesis/Dissertation
·
OSTI ID:5613432
The experiments were conducted at GSI Darmstadt using a positron spectrometer based on the axial focussing property of a solenoidal magnetic field for charged particles together with a baffle system and an annihilation-radiation detector to provide a large detection efficiency for positrons while suppressing the gamma-ray and electron backgrounds. Two position-sensitive particle detectors determined the kinematic parameters for each collision, allowing the isolation of interesting events. The background of positrons from internal pair conversion of excited nuclear states was calculated from the gamma-ray flux monitored in NaI(Tl) detectors. The collision systems measured were U + Cm at a bombarding energy of 6.05 MeV/amu, U + U at 5.9 MeV/amu, and U + Pb at 5.9 MeV/amu.
- Research Organization:
- Yale Univ., New Haven, CT (USA)
- OSTI ID:
- 5613432
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTINIDES
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CHARGED-PARTICLE REACTIONS
CURIUM
DATA
ELECTRODYNAMICS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
GAMMA SPECTRA
GEV RANGE
GEV RANGE 10-100
HEAVY ION REACTIONS
INFORMATION
LEAD
LEPTONS
METALS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
POSITRONS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
SPECTRA
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
URANIUM
URANIUM 238 REACTIONS
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTINIDES
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CHARGED-PARTICLE REACTIONS
CURIUM
DATA
ELECTRODYNAMICS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
GAMMA SPECTRA
GEV RANGE
GEV RANGE 10-100
HEAVY ION REACTIONS
INFORMATION
LEAD
LEPTONS
METALS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
POSITRONS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
SPECTRA
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
URANIUM
URANIUM 238 REACTIONS