Spin polarization of 37K produced in a single-proton pickup reaction at intermediate energies.
Spin polarization of 37K nuclei produced via single proton pickup from a 9Be target by a beam of 150 MeV/nucleon 36Ar has been observed. Positive spin polarization with magnitude (8.5+/-0.6)% was deduced near the peak of the 37K momentum distribution. The variation of the spin polarization as a function of outgoing 37K momentum is explained by a classical conservation model, as previously applied to describe the induced spin polarization observed for fragments produced in intermediate-energy heavy-ion reactions, with the condition that the picked-up proton has an average momentum equal to the Fermi momentum and is aligned along the incident beam direction.
Groh
D E
DE
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
Mantica
P F
PF
Stuchbery
A E
AE
Stolz
A
A
Mertzimekis
T J
TJ
Rogers
W F
WF
Davies
A D
AD
Liddick
S N
SN
Tomlin
B E
BE