Light fragment characteristics from the interaction of multi-GeV C-12 ions and protons with a range of target elements

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5160403

Cole, G D

Comparative studies of the interaction of high energy /sup 12/C ions and protons with complex nuclei serve to elucidate the mechanisms of nuclear reactions induced by the former, a novel and not well understood projectile. The current experiment was designed to broadly explore the properties of light products using a thick-target, thick-catcher technique. Target packets were constructed using foils of Cu, Ag, Gd, Ta, Au and U metal, each surrounded by thick plastic catchers. Targets were irradiated by 400-GeV protons and 18.5-GeV /sup 12/C heavy ions (Hl). Gamma-ray analysis of the foils allowed the determination of cross sections (sigma) and recoil properties associated with products of /sup 24/Na, /sup 28/Mg, /sup 42/K, /sup 44/Sc/sup m/, /sup 48/Sc, /sup 48/V and /sup 52/Mn from each target for each projectile. Use of the recoil properties and the velocity-vector representation of the two-step model gave corresponding recoil parameters. These include the forward velocity, ..beta../sub parallel/ (in units of c), imparted to the target redsidue, and the average kinetic energy, , of the recoiling product of the residue's breakup. The results have been used to test the factorization hypothesis, which predicts that the product cross sections from target-fragmentation reactions depend on the identity of the projectile only via a factorable total cross-section term.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 5160403
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDES
BARYON REACTIONS
BREAKUP REACTIONS
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
COPPER
CROSS SECTIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
GADOLINIUM
GEV RANGE
GEV RANGE 10-100
GEV RANGE 100-1000
GOLD 197 TARGET
HADRON REACTIONS
HEAVY ION REACTIONS
INFORMATION
METALS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PROTON REACTIONS
RARE EARTHS
RECOILS
SILVER
TANTALUM 181 TARGET
TARGETS
TRANSITION ELEMENTS
URANIUM
VELOCITY