Publication

Transverse relaxation in proton NMR. Separate measurement of decay rates of in-phase and antiphase coherence

Geoffrey Bodenhausen
1995
Journal Articles

Abstract

The first 1H NMR measurements are reported that allow on to compare T2 decay rates under free precession with T1p decay rare of spin-locked in-phase and antiphase coherence. Measurements were make for the cyclic undecapeptide cyclosporin A and for the self-complementary duplex B-DNA docecamer d(CGCGAATTCGCG)2. [on SciFinder (R)]

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Geoffrey Bodenhausen
1995
Journal Articles

Abstract

Official source

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In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in so-called positron emission.

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In nuclear science, the decay chain refers to a series of radioactive decays of different radioactive decay products as a sequential series of transformations. It is also known as a "radioactive cascade". The typical radioisotope does not decay directly to a stable state, but rather it decays to another radioisotope. Thus there is usually a series of decays until the atom has become a stable isotope, meaning that the nucleus of the atom has reached a stable state. Decay stages are referred to by their relationship to previous or subsequent stages.

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Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay, all of which involve emitting particles. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetism and nuclear force.

Related publications (32)

Transverse relaxation in proton NMR. Separate measurement of decay rates of in-phase and antiphase coherence

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