A source of polarized 3He ions

Burcham, W.E.; Karban, O.; Oh, S.; Powell, Warren B.

doi:10.1016/0029-554x(74)90569-2

Cited by 52 publications

(30 citation statements)

References 11 publications

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“…Peak intensities of about 1.4 × 10 19 W cm −2 could be reached in the focus. As laser target, both 4 He and unpolarized 3 He gas were used. A de Laval nozzle with a nozzle throat of 0.5 mm was attached in order to shape a gas jet with adequate density profile (sharp density ramps at the outer gas-jet regions with a near-flat-top profile in the center).…”

Section: Experimental Studiesmentioning

confidence: 99%

“…A de Laval nozzle with a nozzle throat of 0.5 mm was attached in order to shape a gas jet with adequate density profile (sharp density ramps at the outer gas-jet regions with a near-flat-top profile in the center). Different backing pressures were applied during the experimental beamtime: in case of 4 He gas, the pressures were 30 bar and 15 bar, and in case of 3 He gas a maximal backing pressure of 8 bar was available. The maximal particle density inside the gas jet is proportional to the applied backing pressure in front of the nozzle: the densities for these pressure regimes in the focus height were 6 × 10 19 cm −3 ≈ 0.06 n c , 3.25 × 10 19 cm −3 ≈ 0.03 n c , and (in case of 3 He) 1.67 × 10 19 cm −3 ≈…”

Section: Experimental Studiesmentioning

confidence: 99%

“…The TPs were armed with Agfa MD4.0 image plates (IP) [19,20] and for one laser shot with TASTRAK CR-39 SSNTDs [21]. Appropriate CST simulations for the given TP setup were conducted in order to gain information about the energy-deflection dependencies of all ion species 3,4 He 1+,2+ inside the TP fields. Thus, experimental data for the specific deflection parameters on the IP-detector plane could directly be related to the corresponding ion energies.…”

Section: Pos(pstp2015)002mentioning

confidence: 99%

“…However, building a spin-polarized 3 He ion source for nuclear and particle physics experiments with high degrees of polarization is extremely challenging. Until now, only a few approaches have shown promise -but not with the desired particle currents or an adequate beam polarization [3,4,5]. At Brookhaven National Lab's Relativistic Heavy Ion Collider (RHIC) attempts are now being made to develop a polarized 3 He ion-beam source [6].…”

Section: Introductionmentioning

confidence: 99%

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Towards a Laser-driven polarized $^3$He Ion Beam Source

Engin¹,

Büscher²,

Deppert³

et al. 2016

Proceedings of XVIth International Workshop in Polarized Sources, Targets, and Polarimetry — PoS(PSTP2015)

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In order to investigate the polarization degree of laser-accelerated 3 He ions from a pre-polarized 3 He gas-jet target, several challenges have to be overcome beforehand. One of these includes the demonstration of the feasibility of laser-induced ion acceleration out of gas-jet targets. In particular, the ion-emission angles as well as the ion-energy spectra have to be determined for future polarization measurements. Such an experiment was performed at the PHELIX Petawatt Laser Facility, GSI Darmstadt. As laser target, both 4 He, and in a second step, unpolarized 3 He gas were applied.

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Section: Experimental Studiesmentioning

confidence: 99%

Section: Experimental Studiesmentioning

confidence: 99%

Section: Pos(pstp2015)002mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Towards a Laser-driven polarized $^3$He Ion Beam Source

Engin¹,

Büscher²,

Deppert³

et al. 2016

Proceedings of XVIth International Workshop in Polarized Sources, Targets, and Polarimetry — PoS(PSTP2015)

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show abstract

“…b) In a duoplasmatron source. 3) Electron beam production with a cold cathode discharge. For the purpose of measuring the velocity of the metastable beam we have built a chopper with five 80 slots on an aluminum disk.…”

Section: Metastable Production and Velocity Measurementmentioning

confidence: 99%

Polarized 3He Ion Source Based on the 23S1 Metastable State

Labrie

Lapointe

Pouliot

et al. 1983

IEEE Trans. Nucl. Sci.

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This 3He polarized ion source is based on the 23S, metastable atomic state. We produce an intense metastable beam,6 xlO1sp.sec-.sr 1, of energies between 0.07 and 0.1 eV, using a cold cathode discharge. The separation and focussing of Zeeman components (F=1 m =1) and (F=3 mF=Z) is effected with a sextupole of varliable gap. an ad?abatic RF transition enhances the nuclear polarization (theoretical)to 100%. Most design parameters of the source are now frozen for operation inside the H.V. terminal of a CN van de Graaff, but the source is of universal use in (+) ion accele-ators.

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Electron Transfer in Simple Atomic Collisions: Recent Theory, Experiment, and Applications

Bayfield

1975

Atomic Physics 4

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A source of polarized 3He ions

Cited by 52 publications

References 11 publications

Towards a Laser-driven polarized $^3$He Ion Beam Source

Towards a Laser-driven polarized $^3$He Ion Beam Source

Polarized 3He Ion Source Based on the 23S1 Metastable State

Electron Transfer in Simple Atomic Collisions: Recent Theory, Experiment, and Applications

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