Author: "S. Bültmann" / Publisher: aip - Searchworks@Jio Institute Digital Library Search Results

Author: Janusz Chwastowski, T. Ljubicic, J. M. Landgraf, K. De, V. P. Kanavets, K. Yip, Nurcan Ozturk, D.N. Svirida, M.F. Runtzo, David Lynn, W. Guryn, N. Guler, Jing Li, S. Yeung, L. Whitehead, Adam Rusek, A. Drees, I-Hung Chiang, L. I. Koroleva, M. Sakitt, S. B. Nurushev, P. Pile, M. Haguenauer, C. Pearson, Michael Rijssenbeek, Steven Tepikian, R. L. Gill, Mikhail N. Strikhanov, I. G. Alekseev, S. Bültmann, A. A. Bogdanov, B. Pawlik, Alexander Khodinov, A. Sandacz, B. V. Morozov, and R. E. Chrien
Subjects: Physics, Elastic scattering, Angular momentum, Scattering, media_common.quotation_subject, Hadron, Momentum transfer, Asymmetry, Baryon, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, media_common
Abstract: Elastic scattering of polarized protons in the range of very small momentum transferred was studied for the first time at s = 200 GeV in the experiment pp2pp at RHIC. This article presents the single spin asymmetry AN and the double spin asymmetries ANN and ASS measured in this experiment.
Published: 2007

Author: S. Bültmann
Subjects: Nuclear physics, Physics, Elastic scattering, Particle physics, Proton, Proton scattering, Proton spectra, High Energy Physics::Experiment, Center of mass, Nuclear Experiment, Relativistic Heavy Ion Collider, National laboratory
Abstract: The pp2pp Collaboration is investigating the elastic scattering process of polarized protons at the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory. The center of mass energy, s, and squared four‐momentum transfer, −t, accessible to the experiment are 50 GeV
Published: 2003

Author: C. D. Keith, S. I. Penttilä, D. Crabb, G.R. Court, Y. Prok, D. B. Day, S. Bültmann, and M. A. Houlden
Subjects: Chemistry, business.industry, Liquid helium, Polarimetry, Cryogenics, Nuclear magnetic resonance spectroscopy, Polarization (waves), law.invention, Optics, law, visual_art, Electronic component, visual_art.visual_art_medium, business
Abstract: The implementation of a NMR circuit designed to improve the detection of small signals and avoid the pitfalls of using a resonant cable is discussed. This new circuit combines a modification of the standard Liverpool Q-meter, together with a circuit of passive components, maintained at liquid helium temperatures. Results from the first tests are presented.
Published: 2001

Author: S. Bültmann, M. L. Seely, C.M Harris, James Boyce, C. D. Keith, J. Mitchell, and D. G. Crabb
Subjects: Physics, Free-electron laser, Particle accelerator, Electron, Polarization (waves), Laser, Linear particle accelerator, law.invention, Deuterium, law, Cathode ray, Physics::Accelerator Physics, Atomic physics, Nuclear Experiment
Abstract: Polarized electron beams have been successfully used at Jefferson Lab for over a year. We now report the successful achievement of polarized targets for nuclear and particle physics experiments using the dynamic nuclear polarization (DNP) technique. The technique involves initial irradiation of frozen ammonia crystals (NH3 and ND3), using the electron beam from the new Free Electron Laser (FEL) facility at Jefferson Lab, and transferring the crystals to a special target holder for use in Experimental Halls. By subjecting the still ionized and frozen ammonia crystals to a strong magnetic field and suitably tuned RF, the high electron polarization is transmitted to the nucleus thus achieving target polarization. Details of the irradiation facility, the target holder, irradiation times, ionized crystal shelf life, and achieved polarization are discussed.
Published: 1999

Author: J. Kyynäräinen, T. O. Niinikoski, J.‐M. Le Goff, A. Kishi, A. Magnon, S. Bültmann, Yannis K. Semertzidis, C. Dulya, Daniel B. Kramer, N. Hayashi, Y. Kisselev, and Günter Baum
Subjects: Physics, Cold dark matter, Butanol, Carbon-13, Time constant, Particle accelerator, Astrophysics::Cosmology and Extragalactic Astrophysics, Polarization (waves), Molecular physics, law.invention, Nuclear physics, Spin–spin relaxation, chemistry.chemical_compound, chemistry, law, Microwave
Abstract: The time constants τ of the spin coupling between protons and 13C‐nuclei in the SMC butanol target was measured as a function of the applied microwave power. A clear decrease of τ in the presence of a microwave field was found. This has to be related to the cross‐relaxation between the different spin species. The application for cold dark matter detection is outlined.
Published: 1995

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