Results 51 to 60 of about 4,129 (201)

Refractive index measurements of solid parahydrogen [PDF]

open access: yesOptics Letters, 2011
Solid para-H2 is a promising gain medium for stimulated Raman scattering, due to its high number density and narrow Raman linewidth. In preparation for the design of a cw solid hydrogen Raman laser, we have made the first measurements, to our knowledge, of the index of refraction of a solid para-H2 crystal, in the wavelength range of 430-1100 nm. For a
Manori, Perera   +7 more
openaire   +2 more sources

SAMBADENA Hyperpolarization of 13C‐Succinate in an MRI: Singlet‐Triplet Mixing Causes Polarization Loss

open access: yesChemistryOpen, 2019
The signal enhancement provided by the hyperpolarization of nuclear spins of biological molecules is a highly promising technique for diagnostic imaging.
Stephan Berner   +7 more
doaj   +1 more source

Efficient SABRE-SHEATH Hyperpolarization of Potent Branched-Chain-Amino-Acid Metabolic Probe [1-13C]ketoisocaproate

open access: yesMetabolites, 2023
Efficient 13C hyperpolarization of ketoisocaproate is demonstrated in natural isotopic abundance and [1-13C]enriched forms via SABRE-SHEATH (Signal Amplification By Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei).
Isaiah Adelabu   +9 more
doaj   +1 more source

Grand-Canonical Adaptive Resolution Centroid Molecular Dynamics: Implementation and Application

open access: yes, 2016
We have implemented the Centroid Molecular Dynamics scheme (CMD) into the Grand Canonical-like version of the Adaptive Resolution Simulation Molecular Dynamics (GC-AdResS) method.
Agarwal, Animesh, Site, Luigi Delle
core   +1 more source

Intermolecular Nuclear Spin Hyperpolarization Transfer via Cross‐Relaxation Triggers RASER of Solute Molecules

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 19, 4 May 2026.
Radiofrequency amplification by stimulated emission of radiation (RASER) of solutes was achieved via parahydrogen‐induced polarization (PHIP) and polarization transfer from the produced hyperpolarization donors to solutes via the intermolecular nuclear Overhauser effect (NOE).
Ivan A. Trofimov   +8 more
wiley   +1 more source

Superfluidity of 4He nanoclusters in confinement

open access: yes, 2015
Structure and superfluid response of nanoscale size helium-four clusters enclosed in spherical cavities are studied by computer simulations. The curved surface causes the formation of well-defined concentric shells, thus imparting to the system a very ...
Boninsegni, Massimo
core   +1 more source

Long nuclear spin coherence times for molecules trapped in high-purity solid parahydrogen

open access: yesPhysical Review Research
We measure the ensemble transverse relaxation time (T_{2}^{*}) and spin-echo coherence time (T_{2}) of the proton spin of HD molecules trapped in solid parahydrogen.
Alexandar P. Rollings   +1 more
doaj   +1 more source

Thermodynamic and transport properties of frozen and reacting pH2-oH2 mixtures [PDF]

open access: yes, 1972
Application of experimental state data and spectroscopic term values shows that the thermodynamic and transport properties of reacting pH2-oH2 mixtures are considerably different than those of chemically frozen pH2 at temperatures below 300 R. Calculated
Bullock, R. E., Carter, H. G.
core   +1 more source

Poisson's ratio in cryocrystals under pressure [PDF]

open access: yes, 2015
We present results of lattice dynamics calculations of Poisson's ratio (PR) for solid hydrogen and rare gas solids (He, Ne, Ar, Kr and Xe) under pressure.
Alexander F. Goncharov   +6 more
core   +2 more sources

Heterogeneous Parahydrogen Pairwise Addition to Cyclopropane [PDF]

open access: yesChemPhysChem, 2018
AbstractHyperpolarized gases revolutionize functional pulmonary imaging. Hyperpolarized propane is a promising emerging contrast agent for pulmonary MRI. Unlike hyperpolarized noble gases, proton‐hyperpolarized propane gas can be imaged using conventional MRI scanners with proton imaging capability.
Oleg G. Salnikov   +6 more
openaire   +2 more sources

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