A comparison of the magnetic interaction of protons and deuterons

Journal Article · Wed Jun 01 04:00:00 EDT 1960 · European Physical Journal. A

DOI:https://doi.org/10.1007/BF01337768· OSTI ID:4149590

Laukien, G; Noack, F

For the investigation of the magnetic interaction mechanism between nuclear and electron moments, the relaxation behavior of pretons and deuterons in a constant magnetic field of about 7400 gauss was compared. The longitudinal and trereverse relaxation times Tl p and T2 p or Ti D and Ti,D of both nuclei were measured by pulse techniques in pararmagnetic H₂O and D₂O solutions of various concentrations. As interaction partner the fons Fe³⁺, Co²⁺ , C³⁺, VO²⁺ (in neutral and acid solution) and Mn²⁺ were used. The measurements showed that in solutions in which T approx equal T the approximation T D approx equal T₂D is also valid. In such solutions the time constants of the deuteron relaxation is in agreement with theory Tl 2 approximately l/ gamma ², which is about 40 times larger than the time constant for proton relaxation. In solutions in which the times T₂ are markedly shorter than the times T₁, values for the ratios T ₁ D/T₁ p and T2 D/ T2 p are found which lie definitely outside the theoretically predicted intervals, both over and under the intervals. The direction of the deviation is shown correlated with an oprosite variation of the quotient T₁/ T₂ in the sense that the eccurrence of ahnormally short deuteron relaxation times is connected with an increase of the ratio T₁/T₂ in the transition from proton to deulteron relaxation and is reversed. The measurements show thst in the first-named substance (its relaxation behavior was shown as normal) the direct dipole-dipole coupling is outweighed. In the second substance group the spin exchange coupling gives a significant contribution to relaxation. From the experimental results it is concluded that the characteristic constant A of the indirect coupling is not, as theoretically expected, proportional to the gyromagnetic ratios of the interacting partner. A concentration anomaly of the transverse relaxation was noticed in concentrated solutions, and it was theoretically explained.

• Research Organization: Technische Hochschule, Stuttgart
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-023548
• OSTI ID: 4149590
• Journal Information: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 3 Vol. 159; ISSN 1434-6001
• Publisher: Springer
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHROMIUM
COBALT
COUPLING
DEUTERONS
DIPOLES
ELECTRONS
HEAVY WATER
INTERACTIONS
IONS
IRON
MAGNETIC FIELDS
MAGNETIC MOMENTS
MANGANESE
MEASURED VALUES
NUCLEI
PROTONS
RELAXATION
SLOWDOWN
SOLUTIONS
SPIN
VANADIUM OXIDES
WATER