Nuclear Spin Filter

McKibben, J.L.; Lawrence, G.P.; Ohlsen, G.G.

doi:10.1103/physrevlett.20.1180

Cited by 53 publications

(14 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The spin filter 13 transmits only metastable atoms in single HFSs, depending on the magnetic field. The other metastable atoms are quenched into the ground state by the three-level spin filter interaction, 14 induced by the combined action of three fields:…”

Section: Methodsmentioning

confidence: 99%

Precision Lamb-shift polarimeter for polarized atomic and ion beams

Engels

Emmerich

Ley

et al. 2003

Review of Scientific Instruments

View full text Add to dashboard Cite

The Lamb-shift polarimeter described here enables the polarization of a beam of hydrogen ͑deuterium͒ atoms, or of a slow proton ͑deuteron͒ beam, to be measured with an absolute precision better than 1% within a few seconds. The polarimeter measures the intensity ratios of Lyman-␣ transitions after Stark quenching of metastable hyperfine substates that were selected in a spin filter. For that purpose the hydrogen ͑deuterium͒ atoms are ionized in a Glavish-type ionizer. By charge exchange of the protons ͑deuterons͒ in cesium vapor, atoms in the metastable 2S state are produced. For a hydrogen beam of 3ϫ10 16 atoms/s, ϳ3ϫ10 6 photons/s are registered in a photomultiplier, i.e., the polarimeter efficiency is about 10 Ϫ10. The signal-to-background ratio in the Lyman-␣ spectrum is excellent, thus beam intensities of one to two orders of magnitude less would still be sufficient to carry out a precise measurement. The different components of the polarimeter affect the measured polarization in several ways. It was, therefore, crucial to determine precisely the associated correction factors in order to derive the nuclear polarization from the measured Lyman-␣ spectra.

show abstract

Section: Methodsmentioning

confidence: 99%

Precision Lamb-shift polarimeter for polarized atomic and ion beams

Engels

Emmerich

Ley

et al. 2003

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…With a spinfilter [13], the most important component of a Lamb-shift polarimeter [14], it is possible to produce an intense beam of hydrogen atoms in the ground state 1S 1/2 and in single metastable HFS α1 or α2 of the 2S 1/2 state only. This can be used to establish a setup similar to that of the Atomic Beam Resonance Method (Fig.…”

Section: Setup For the Measurement Of The 2s 1/hyperfine Splittingmentioning

confidence: 99%

Precision spectroscopy of metastable hydrogen and antihydrogen with a Lamb-shift polarimeter

et al. 2009

View full text Add to dashboard Cite

A spinfilter, the most important component of a Lamb-shift polarimeter, can be used to produce a beam of metastable hydrogen (deuterium) atoms in one hyperfine state (α1, α2 and together with the Sona transition β3). As function of a magnetic field separated transitions between the 2S 1/2 metastable hyperfine states seem to be observable as well as single transitions into the short-lived 2P 1/2 and 2P 3/2 states. The Breit-Rabi diagrams for these states can be measured with good precision. Furthermore, the hyperfine splittings and the Lamb shift can be observed as well. Application of this method to anti-hydrogen atoms are suggested.

show abstract

“…Рабочие значения магнитных полей в области ионизации чисто метастабильного пучка, полученного в спиновом фильтре, указаны в табл. III 92 . Таблица III где п + -число метастабильных атомов с rtij == V2, а гс_ -число тех же атомов с τη,χ = -1/2.…”

Section: получение пучков поляризованных частицunclassified

“…Ионный пучок ускоряется до энергии 5-15 кэв и фокусируется ахроматической ионно-оптической системой на вход системы аксиальной инжекции. Эффективность иониза-ции оценивается в 10~3, эмиттанс в кроссовере равен примерно 5 см -рад χ X (эе) 1 92 . Первичные положительные ионы вытягиваются из дуоплазмотрона напряжением 5-10 кв и затем тормозятся до 500 или 1000 в. Магнитная линза позволяет пропускать ток 10 ма ρ или d. Парь'1 цезия покрывают сетку, из которой при ионной бомбардировке вылетают электроны, дающие 96%-ную нейтрализацию объемного заряда.…”

Section: ускорение поляризованных ионовunclassified

The current state of the physics and technology of obtaining polarized particle beams

Plis¹,

Soroko²

1972

Usp. Fiz. Nauk

View full text Add to dashboard Cite

Nuclear Spin Filter

Cited by 53 publications

References 5 publications

Precision Lamb-shift polarimeter for polarized atomic and ion beams

Precision Lamb-shift polarimeter for polarized atomic and ion beams

Precision spectroscopy of metastable hydrogen and antihydrogen with a Lamb-shift polarimeter

The current state of the physics and technology of obtaining polarized particle beams

Contact Info

Product

Resources

About