Target with a frozen nuclear polarization for experiments at low energies

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.48953· OSTI ID:256132

Borisov, N S; Matafonov, V N; Neganov, A B; Plis, Y A; Shchevelev, O N; Usov, Y A ^[1]; Jansky, I; Rotter, M; Sedlak, B; Wilhelm, I ^[2]; Gurevich, G M ^[3]; Lukhanin, A A ^[4]; Jelinek, J; Srnka, A ^[5]; Skrbek, L ^[6]

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1. Joint Institute for Nuclear Research, Laboratory of Nuclear Problems, 141980 Dubna, Moscow Region (Russia)
2. Faculty of Mathematics and Physics, Charles University, V Holesovickach 2, 180 00 Prague 8, (Czech Republic)
3. Institute for Nuclear Research, Russian Academy of Sciences, 60th October Anniversary prospect 7A, 117312 Moscow (Russia)
4. Kharkov Institute of Physics and Technology, Academicheskaya str. 1, 310108 Kharkov (Ukraine)
5. Institute of Physical Instrumentation, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno, (Czech Republic)
6. Institute of Physics, Academy of Sciences of the Czech Republic, 250 68 Rez (Czech Republic)

The short history of the development of frozen spin polarized targets at the Laboratory of Nuclear Problems JINR is given. The latest development is the target with a frozen spin polarization of protons in 1,2- propanediol with a paramagnetic Cr{sup {ital V}} impurity, intended for polarization parameter studies in np-scattering at approximately 15 MeV neutron energy. The target of cylindrical shape of 2 cm diameter and 6 cm long with an initial polarization of 95{plus_minus}3{percent} obtainable by the dynamic polarization technique is placed at a temperature about 20 mK in a magnetic field of 0.37 T generated by a magnetic system, which provides a large aperture for scattered particles. The relaxation time for the spin polarization is about 1000 hours. {copyright} {ital 1995 American Institute of Physics.}

• Sponsoring Organization: USDOE
• OSTI ID: 256132
• Report Number(s): CONF-9409103--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 343; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
66 PHYSICS
CHROMIUM ADDITIONS
DESIGN
MAGNETIC FIELDS
POLARIZED TARGETS
PROPANOLS
PROTONS
RELAXATION TIME
TEMPERATURE RANGE 0000-0013 K