منابع مشابه
Ultra-cold atomic hydrogen beam
We investigated two methods of producing a continuous free beam of electron-spin polarized atomic hydrogen, using a 7.5 T solenoid magnetic field and a helium film-coated cell . The first method involves accumulating H 1 at high field in a 300 mK storage cell and flipping the electron spin by using microwaves to drive a hyperfine transition . The resulting HT atoms are accelerated and focused b...
متن کاملBeam-induced Resonant Depolarization Eeects in a Polarized Atomic Hydrogen Gas Target at Hera
In the HERMES experiment at HERA deep inelastic scattering of polarized positrons from internal polarized gas targets is used to study the spin structure of the nucleons. For the hydrogen target, a strong magnetic eld parallel to the positron beam direction is used to maintain the polarization of the atoms inside the target cell. Depolarization of the atoms due to time dependent magnetic elds r...
متن کاملAtomic and molecular hydrogen elimination in the crossed beam
The chemical reaction dynamics to form d1-diacetylene, DCCCCH (X S), and the d1-butadiynyl radical, DCCCC, via the reaction of d1-ethinyl, C2D (X S), with acetylene, C2H2 (X Sg ), are explored in a crossed molecular beam experiment at an average collision energy of 26.1 kJ mol . The experiments show that the reaction follows indirect scattering dynamics via a C4H2D intermediate. The calculation...
متن کاملPolarized Beam Jets
Handedness and a left-right asymmetry have been proposed as methods of probing the polarization of hard jets. If the analyzing powers for these observables are substantial they would provide useful tools for probing polarized hard scattering. This paper proposes that comparing these to the corresponding quantities in beam jets in polarized hadron-hadron collisions would be useful. These would s...
متن کاملA Polarized HERA Collider Electron Beam Proton Beam Beam Energy 26 − 30 GeV 800 − 930 GeV Polarization Status Polarized
1. Space quantization associated with quantized spin directions. Stern, Gerlach, 1921. 2. Atomic fine structure and electron spin magnetic moment. Goudsmit, Uhlenbeck, 1926. 3. Proton anomalous magnetic moment; μp = 2.79 nm. Stern, 1933. 4. Electron spin anomalous magnetic moment. μe = μ0 (1.00119); QED. Kusch, 1947. 5. Electroweak interference from ~e1d DIS parity nonconservation. Prescott & S...
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ژورنال
عنوان ژورنال: Zeitschrift f�r Physik D Atoms, Molecules and Clusters
سال: 1988
ISSN: 0178-7683,1434-6079
DOI: 10.1007/bf01425757