1A distribution of electric charge or magnetization consisting of four equal monopoles, or two equal dipoles, arranged close together with alternating polarity and operating as a unit.
〔物理〕四极
as modifierthe quadrupole moment
Example sentencesExamples
The deuterium quadrupole echo spectra of the two samples are presented in Fig.7.
Lowering the temperature appears to substantially shorten the quadrupole echo decay time of the prominent doublet component.
Motions that change the quadrupole interaction while an echo is being formed contribute to echo decay.
For this protein, representation of its electrostatic properties by a quadrupole moment seems more appropriate.
The two populations differ in their averaged quadrupole splitting and in their 2 H chemical shift values.
Such simulations can, however, display rapid small amplitude motions that modulate the quadrupole interaction about its average.
1.1A device using a quadrupole arrangement directed at one point to focus beams of subatomic particles.
四极聚向设备
Example sentencesExamples
The plot in Fig.2 has a striking qualitative similarity to the observed NMR quadrupole splittings.
In Q-Tof mass spectrometers ions are focused by a radio frequency lens before transmission to the quadrupole.
We have used a microfabricated planar quadrupole as a test bed for evaluating DEP-based traps, using polystyrene beads as a model for cells.
Definition of quadrupole in US English:
quadrupole
nounˈkwɑdrəˌpoʊlˈkwädrəˌpōl
Physics
1A distribution of electric charge or magnetization consisting of four equal monopoles, or two equal dipoles, arranged close together with alternating polarity and operating as a unit.
〔物理〕四极
as modifierthe quadrupole moment
Example sentencesExamples
The deuterium quadrupole echo spectra of the two samples are presented in Fig.7.
The two populations differ in their averaged quadrupole splitting and in their 2 H chemical shift values.
Lowering the temperature appears to substantially shorten the quadrupole echo decay time of the prominent doublet component.
Motions that change the quadrupole interaction while an echo is being formed contribute to echo decay.
For this protein, representation of its electrostatic properties by a quadrupole moment seems more appropriate.
Such simulations can, however, display rapid small amplitude motions that modulate the quadrupole interaction about its average.
1.1A device using a quadrupole directed at one point to focus beams of subatomic particles.
四极聚向设备
Example sentencesExamples
We have used a microfabricated planar quadrupole as a test bed for evaluating DEP-based traps, using polystyrene beads as a model for cells.
The plot in Fig.2 has a striking qualitative similarity to the observed NMR quadrupole splittings.
In Q-Tof mass spectrometers ions are focused by a radio frequency lens before transmission to the quadrupole.