Observation of spin polarization of projectile fragments from 106 A MeV 40Ca+Au collisions

Matsuta, K.; Ozawa, A.; Nojiri, Y.; Minamisono, T.; Fukuda, M.; Kitagawa, A.; Momota, S.; Ohtsubo, T.; Matsuo, Y.; Takechi, Hajime; Fukuda, Satoshi; Minami, I.; Sugimoto, Katsuhisa; Tanihata, I.; Omata, K.; Alonso, J.; Krebs, G. F.; Symons, T. J. M.

doi:10.1016/0370-2693(92)91131-r

Cited by 20 publications

(4 citation statements)

References 12 publications

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“…The beam exited the evacuated beam line through a Kapton window, traversed 20 cm of air, passed through an Al collimator, and was deposited in a KBr crystal located at the center the -NMR dipole magnet. The spin-lattice relaxation time, T 1 , for 37 K in KBr is several seconds at room temperature [9] and compares favorably to the -decay half-life of 37 K, which is 1.226 s [10]. The 4 mm thick KBr crystal had a diameter of 22 mm and was placed at a 45 angle relative to the beam axis to minimize the amount of material particles would traverse before reaching the telescopes.…”

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confidence: 99%

Spin Polarization ofK37Produced in a Single-Proton Pickup Reaction at Intermediate Energies

et al. 2003

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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.

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confidence: 99%

Spin Polarization ofK37Produced in a Single-Proton Pickup Reaction at Intermediate Energies

et al. 2003

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“…Polarization of about 5% was observed [17] for the beta-emitting fragments 37K and 39Ca produced in the 40Ca on Au collision at 106 MeV /nucleon as shown in Fig. 9.…”

Section: B) Reaction Polarizationmentioning

confidence: 88%

Production of unstable nuclei far from the stability line: its scope and limitations

et al. 1993

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“…The 4 mm-thick, 22 mm-diameter disc-shaped KBr single crystal was mounted on an insulated holder, between the pair of the rf coils and at a 45 • angle with respect to the normal beam axis to minimize the energy loss of the emitted β particles. The spin-relaxation time of the implanted 35 K ions in the ionic crystal is much longer than the decay lifetime [14].…”

Section: Experimental Techniquementioning

confidence: 97%

Ground state magnetic dipole moment ofK35

et al. 2006

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The ground state magnetic moment of 35 K has been measured using the technique of nuclear magnetic resonance on β-emitting nuclei. The short-lived 35 K nuclei were produced following the reaction of a 36 Ar primary beam of energy 150 MeV/nucleon incident on a Be target. The spin polarization of the 35 K nuclei produced at 2 • relative to the normal primary beam axis was confirmed. Together with the mirror nucleus 35 S, the measurement represents the heaviest T = 3/2 mirror pair for which the spin expectation value has been obtained. A linear behavior of g p vs g n has been demonstrated for the T = 3/2 known mirror moments and the slope and intercept are consistent with the previous analysis of T = 1/2 mirror pairs.

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Observation of spin polarization of projectile fragments from 106 A MeV 40Ca+Au collisions

Cited by 20 publications

References 12 publications

Spin Polarization ofK37Produced in a Single-Proton Pickup Reaction at Intermediate Energies

Spin Polarization ofK37Produced in a Single-Proton Pickup Reaction at Intermediate Energies

Production of unstable nuclei far from the stability line: its scope and limitations

Ground state magnetic dipole moment ofK35

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