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Related papers: Optically Pumped Polarized $^3$He$^{++}$ Ion Sourc…

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We investigate Collisionless Shock Acceleration of spin-polarized ${}^3$He for laser pulses with normalized vector potentials in the range $a_0 = 100-200$. The setup utilized in the 2D-PIC simulations consists of a solid Carbon foil that is…

Plasma Physics · Physics 2024-12-10 Lars Reichwein , Xiaofei Shen , Alexander Pukhov , Markus Büscher

The requirements for hadron polarimetry at the future Electron Ion Collider (EIC) include measurements of the absolute helion ($^3$He, $h$) beam polarization with systematic uncertainties better than $\sigma^\text{syst}_P/P\le1\%$.…

High Energy Physics - Phenomenology · Physics 2023-08-09 Andrei Poblaguev

We report on further investigation of nuclear hyperpolarization of helium-3 in magnetized plasma at a magnetic field of 3.66 T and at different experimental conditions in a dual cell of relatively large volume, compared to those reported in…

Atomic Physics · Physics 2022-08-16 Alexander Makarchenko , Vyacheslav Kuzmin , Kajum Safiullin , Murat Tagirov

A day-1 EIC detector should be prepared to carry out inclusive DIS measurements from electron collisions with nucleon and nuclear beams. Here I consider the scientific motivation for spin-dependent DIS measurements from a polarized $^3$He…

Nuclear Experiment · Physics 2018-09-18 Richard Milner

After being hyperpolarized using the technique of Metastability Exchange Optical Pumping (MEOP), 3He can be used as a contrast agent for lung magnetic resonance imaging (MRI). MEOP is usually performed at low magnetic field (~ 1 mT) and low…

Instrumentation and Detectors · Physics 2015-06-15 G. Collier , T. Pałasz , A. Wojna , B. Głowacz , M. Suchanek , Z. Olejniczak , T. Dohnalik

In the past three decades, the development of nuclear physics facilities for fundamental and applied science purposes has required an increasing current of multicharged ion beams. Multiple ionization implies the formation of dense and…

Accelerator Physics · Physics 2014-10-30 S. Gammino

We perform metastability exchange optical pumping of helium-3 in a strong magnetic field of 1.5 T. The achieved nuclear polarization, from 80% at 1.33 mbar to 25% at 67 mbar, shows a substantial improvement at high pressures with respect to…

Atomic Physics · Physics 2009-09-29 Marie Abboud , Alice Sinatra , Xavier Maitre , Genevieve Tastevin , Pierre-Jean Nacher

Maintaining high levels of 3He polarization over long periods of time is important to many areas of fundamental and particle beam physics. Long measurement times are often required in such experiments and the data quality is a function of…

Instrumentation and Detectors · Physics 2015-05-18 E. Babcock , S. Mattauch , A. Ioffe

At low magnetic field, metastability exchange optical pumping of helium-3 is known to provide high nuclear polarizations for pressures around 1 mbar. In a recent paper, we demonstrated that operating at 1.5 T can significantly improve the…

Atomic Physics · Physics 2016-08-16 Marie Abboud , Alice Sinatra , Geneviève Tastevin , Pierre-Jean Nacher , Xavier Maître

The capability of performing accurate measurements of neutron beam polarization opens a number of exciting opportunities in fundamental neutron physics and in neutron scattering. At the LANSCE pulsed neutron source we have measured the…

An unprecedented positron average current is required to fit the luminosity demands of future $e^+e^-$ high energy physics colliders. In addition, in order to access precision-frontier physics, these machines require positron polarization…

Many ion species commonly used for laser-cooled ion trapping studies have a low-lying metastable 2D3/2 state that can become populated due to spontaneous emission from the 2P1/2 excited state. This requires a repumper laser to maintain the…

Atomic Physics · Physics 2013-02-04 T. Lindvall , T. Fordell , I. Tittonen , M. Merimaa

The preservation of nuclear spin alignment in plasmas is a prerequisite for important applications, such as energy production through polarized fusion or the acceleration of polarized particle beams. Although this conservation property has…

A new laser ion source configuration based on resonant photoionization in a gas cell has been developed at RIBF RIKEN. This system is intended for the future PArasitic RI-beam production by Laser Ion-Source (PALIS) project which will be…

In order to achieve the physics goals of future Linear Colliders, it is important that electron and positron beams are polarized. The baseline design at the International Linear Collider (ILC) foresees an e+ source based on helical…

Accelerator Physics · Physics 2012-02-06 V. Kovalenko , O. S. Adeyemi , A. Hartin , G. Moortgat-Pick , L. Malysheva , S. Riemann , F. Staufenbiel , A. Ushakov

The $^3$He isotope is important to many fields of astrophysics, including stellar evolution, chemical evolution, and cosmology. The isotope is produced in low-mass stars which evolve through the planetary nebula (PN) phase. $^3$He…

Solar and Stellar Astrophysics · Physics 2016-04-27 L. Guzman-Ramirez , J. R. Rizzo , A. A. Zijlstra , C. García-Miró , C. Morisset , M. D. Gray

The Polarized Atomic Hydrogen Gas Jet Target polarimeter (HJET) is operated at the Relativistic Heavy Ion Collider (RHIC) since 2004 to measure the absolute polarization of each colliding proton beam. Polarimeter detectors and data…

Instrumentation and Detectors · Physics 2020-06-16 A. A. Poblaguev , A. Zelenski , G. Atoian , Y. Makdisi , J. Ritter

The Isotope mass Separator On-Line DEvice (ISOLDE) facility located at CERN, produces and transports Radioactive Ion Beams (RIBs) at low or high energy through the REX/HIE-ISOLDE linear accelerator, for nuclear physics, astrophysics,…

Accelerator Physics · Physics 2018-09-25 Niels Bidault , Jose Alberto Rodriguez , Miguel Lozano , Sergey Sadovich

A novel regime is proposed where, employing linearly polarized laser pulses at intensities $10^{21}\textrm{Wcm}^{-2}$ as two order of magnitude lower than earlier predicted [T. Esirkepov et al., Phys. Rev. Lett. 92, 175003 (2004)], ions are…

Plasma Physics · Physics 2015-06-04 B. Qiao , S. Kar , M. Geissler , P. Gibbon , M. Zepf , M. Borghesi

Transfer of polarized 3He gas across spatially varying magnetic fields will facilitate a new source of polarized 3He ions for particle accelerators. In this context, depolarization of atoms as they pass through regions of significant…

Instrumentation and Detectors · Physics 2015-12-09 James D. Maxwell , Charles S. Epstein , Richard G. Milner