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- W2046268833 abstract "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 ↓ at high field in a 300 mK storage cell and flipping the electron spin by using microwaves to drive a hyperfine transition. The resulting H↑ atoms are accelerated and focused by the solenoid gradient to form an extracted beam. The second method uses the helium film-coated cell as an ultra-cold nozzle. Unpolarized hydrogen is thermalized in high field by collisions with the cell walls; the field gradient subsequently separates the atoms of different spin states to produce an H↑ beam." @default.
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- W2046268833 date "1993-10-01" @default.
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- W2046268833 title "Ultra-cold atomic hydrogen beam" @default.
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- W2046268833 doi "https://doi.org/10.1016/0168-9002(93)90252-d" @default.
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