𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Dynamic nuclear polarisation of biological matter

✍ Scribed by H. B. Stuhrmann; O. Schärpf; M. Krumpolc; T. O. Niinikoski; M. Rieubland; A. Rijllart

Publisher
Springer
Year
1986
Tongue
English
Weight
464 KB
Volume
14
Category
Article
ISSN
1432-1017

No coin nor oath required. For personal study only.

✦ Synopsis

Polarised targets as used in high energy physics experiments may be of considerable interest in biological structure research using polarized neutrons. So far, this promising method has been facing difficulties in getting reasonable polarization of the target nuclei. We report on a polarized "frozen spin" target which has been prepared from an enzyme dissolved in a mixture of heavy water and deuterated propanediol doped with a completely deuterated paramagnetic radical. Clusters of 700 protons defined by the structure of lysozyme embedded in a fully deuterated matrix were polarized to 75% within an hour by 4 mm microwave irradiation in a magnetic field of 2.5 tesla at a temperature of 0.3 K. The polarisation behaviour of biological targets can be compared to the best frozen spin target materials in high energy physics research.

📜 SIMILAR VOLUMES

Chemically-induced dynamic nuclear polar
Chemically-induced dynamic nuclear polarisation. Photoreactions of organomercury compounds
✍ F. J. J. de Kanter 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 272 KB

## Abstract The photolysis of symmetric and asymmetric organomercury compounds has been studied by CIDNP. No indications of the existence of RHg· radicals have been found. Depending on the solvent, reactions occur from excited states with different spin multiplicities.

Chiral dynamics and nuclear matter
Chiral dynamics and nuclear matter
✍ N. Kaiser; S. Fritsch; W. Weise 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 216 KB

We calculate the equation of state of isospin-symmetric nuclear matter in the three-loop approximation of chiral perturbation theory. The contributions to the energy per particle E(k f ) from one-and two-pion exchange diagrams are ordered in powers of the Fermi momentum k f (modulo functions of k f

Spin polarised nuclear matter and its ap
Spin polarised nuclear matter and its application to neutron stars
✍ V.S. Uma Maheswari; D.N. Basu; J.N. De; S.K. Samaddar 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 969 KB

An equation of state (EOS) of nuclear matter with explicit inclusion of a spin-isospin dependent force is constructed from a finite range, momentum and density dependent effective interaction. This EOS is found to be in good agreement with those obtained from more sophisticated models for unpolarise