electron capture


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e·lec·tron cap·ture

a mode of radioactive disintegration, in which an orbital electron, usually from the K shell, is captured by the nucleus, converting a proton into a neutron with ejection of a neutrino and emission of a gamma ray, and emission of characteristic x-rays as the missing K-shell electron is replaced.
Synonym(s): K capture

electron capture

a radioactive decay process in which an atomic nucleus with an excess of protons draws an electron into itself, creating a neutron out of a proton and thus decreasing the atomic number by 1. Often the resulting nucleus is unstable and achieves stability by giving off a gamma ray.

e·lec·tron cap·ture

(ē-lektron kapshŭr)
Mode of radioactive disintegration, in which an orbital electron, usually from the K shell, is captured by the nucleus, converting a proton into a neutron with ejection of a neutrino and emission of a gamma ray and emission of characteristic x-rays as the missing K-shell electron is replaced.
References in periodicals archive ?
They included the photoacoustic multi-gas monitor model 1312 (PAM) from INNOVA Air Tech Instruments, a Li-6262 infrared gas analyzer (IRGA) from LI-COR Biosciences, an Agilent HP 6890 gas chromatograph with an electron capture detector (GC-ECD) and Qubit System's S151 infrared C[O.
The sampling effort by 23 labs measured dioxins with mass spectrometry and quantified PCBs using gas chromatographic techniques along with electron capture or mass spectrometry.
I then chose three species, 3H (a pure beta emitter with no gammas), 18F and 22Na (both of which decay by both electron capture and positron emission) and was somewhat surprised to see them as having no betas or, in the case of the latter two, as undergoing electron capture with no mention of positron decay.
2]O is usually analyzed by GC with electron capture detection for analyses in the range of ppb (nL/L).
Besides the novel Continuous Accumulation of Selected Ions (CASI[TM]) which allows researchers to selectively enrich the signal from a protein or one of its large multiply charged fragments, the Bruker FTMS also includes external collision-cell or internal ICR cell Collision Induced Dissociation (CID), as well as Electron Capture Dissociation (ECD) in the ICR cell.
Tenders are invited for electron capture detector (ecd) for use with varian 3800/3900 gas chromatography.
Using a 40-meter Rtx[R]-PCB column and electron capture detection, we determined the retention time for each congener individually, then analyzed a composite of Aroclor[R] PCB mixes 1242, 1254, and 1262.
We performed analysis of PCB 153 concentrations by dual capillary column gas chromatography with electron capture detection and sample clean-up on a Florisil column (22).
All electron capture detectors (ECDs) such as those used in gas chromatography use a radioactive foil as their ionization source.
The modified analytical procedure uses gas-liquid chromatography with electron capture detection of the nitro function to separate unchanged drug from metabolites to attain sensitivities of 0.
Besides the novel Continuous Accumulation of Selected Ions (CASI[TM]) which allows researchers to enrich selectively the signal from a selected protein or one of its large multiply charged fragments, the Bruker FTMS already includes external collision-cell or internal ICR cell Collision Induced Dissociation (CID), as well as Electron Capture Dissociation (ECD) in the ICR cell.
Invitation to tender: The Subject Of Procurement Is: A Gas Chromatograph With Electron Capture

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