Particle decay from the giant resonance region of /sup 40/Ca

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.15.246· OSTI ID:7323332

Youngblood, D H; Bacher, A D; Brown, D R; Bronson, J D; Moss, J M; Rozsa, C M

The reactions /sup 40/Ca(..cap alpha.., 2..cap alpha..)/sup 36/Ar and /sup 40/Ca(..cap alpha.., ..cap alpha..p)/sup 39/K have been studied at 115-MeV bombarding energy in order to obtain the charged particle decay characteristics of the giant quadrupole resonance at E/sub x/ = 18.0 MeV. Energy and angle were measured for both outgoing light particles to completely define the kinematics. Weak proton decay to the d/sub 3///sub 2/ (GAMMA/sub p/0/GAMMA = 0.08/sub -//sub 0//sub .//sub 03//sup +0//sup .//sup 05/) and s/sub 1///sub 2/ (GAMMA/sub P/1/GAMMA = 0.22/sub -//sub 0//sub .//sub 08//sup +0//sup .//sup 05/) hole states of /sup 39/K was observed from the giant quadrupole resonance while most of the decay proceeded to the region of the d/sub 5///sub 2/ hole states. While the (..cap alpha.., 2..cap alpha..) reaction populated the /sup 36/Ar ground state (0/sup +/), 1.97-MeV state (2/sup +/), and 4.18--4.44-MeV states (4/sup +/, 3/sup -/), only upper limits could be established for ..cap alpha.. decay of the giant quadrupole resonance (GAMMA/sub b/0/GAMMA < 0.06). Significant decay of the 14-MeV L = 2 state to the ground state of /sup 36/Ar was observed (GAMMA/sub b/0/GAMMA approx. 0.9 +- 0.2). (AIP)

• Research Organization: Cyclotron Institute and Physics Department, Texas A and M University, College Station, Texas 77843
• OSTI ID: 7323332
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 15:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA PARTICLES
ALPHA REACTIONS
ANGULAR DISTRIBUTION
ARGON 36
ARGON ISOTOPES
BARYONS
BRANCHING RATIO
CALCIUM 40
CALCIUM 40 TARGET
CALCIUM ISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DECAY
DIRECT REACTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
GIANT RESONANCE
HADRONS
ISOTOPES
KNOCK-OUT REACTIONS
LIGHT NUCLEI
MEV RANGE
MEV RANGE 100-1000
MEV RANGE 100-1000 ARGON 36
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
POTASSIUM 39
POTASSIUM ISOTOPES
PROTONS
QUASI-FREE REACTIONS
RESONANCE
SCATTERING
STABLE ISOTOPES
TARGETS