Magnetized boxes for housing polarized spins in homogeneous fields

Hiebel, S.; Großmann, T.; Kiselev, D.; Schmiedeskamp, Jörg; Gusev, Yu. V.; Heil, W.; Karpuk, S.; Krimmer, J.; Otten, Ernst W.; Salhi, Zahir

doi:10.1016/j.jmr.2010.01.017

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He Relaxation1

The Precursor Au Is No Longer In Compliance With1

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Cited by 16 publications

(23 citation statements)

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“…Effects on the wall relaxation[29] and storage conditions[30] were intensively studied for 3 He, only 3. This value of 3 h is a typical threshold we obtained from several private communications.…”

mentioning

confidence: 99%

Systematic T1 improvement for hyperpolarized 129xenon

Repetto

Babcock

Blümler

et al. 2015

Journal of Magnetic Resonance

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mentioning

confidence: 99%

Systematic T1 improvement for hyperpolarized 129xenon

Repetto

Babcock

Blümler

et al. 2015

Journal of Magnetic Resonance

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“…Typical achievable gradients from magnetically shielded solenoids and magic boxes are between 2 × 10 −4 cm −1 and 6 × 10 −4 cm −1 , corresponding to gradient-induced relaxation times of between 3700 h and 600 h, respectively (Chen et al , 2014a). Polarized gas MRI also provided a motivation for compact, light-weight and inexpensive magnetized boxes for transporting polarized gas, in some cases via air freight (Hiebel et al , 2010). …”

Section: He Relaxationmentioning

confidence: 99%

Optically polarizedHe3

et al. 2017

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This article reviews the physics and technology of producing large quantities of highly spin-polarized 3He nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping. Both technical developments and deeper understanding of the physical processes involved have led to substantial improvements in the capabilities of both methods. For SEOP, the use of spectrally narrowed lasers and K-Rb mixtures has substantially increased the achievable polarization and polarizing rate. For MEOP nearly lossless compression allows for rapid production of polarized 3He and operation in high magnetic fields has likewise significantly increased the pressure at which this method can be performed, and revealed new phenomena. Both methods have benefitted from development of storage methods that allow for spin-relaxation times of hundreds of hours, and specialized precision methods for polarimetry. SEOP and MEOP are now widely applied for spin-polarized targets, neutron spin filters, magnetic resonance imaging, and precision measurements.

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“…Special care has to be taken in polarizing, storing, and transporting of the HP gas to avoid potential losses of fragile hyperpolarization (35)(36)(37)(38)(39)(40). Based on experience acquired with the precursor, the new AU was designed according to the following specifications:…”

Section: The Precursor Au Is No Longer In Compliance Withmentioning

confidence: 99%