omegatronn.

Brit.

/ˈəʊmᵻɡətrɒn/, U.S.

/oʊˈmeɪɡəˌtrɑn/,

/oʊˈmɛɡəˌtrɑn/

Origin: Formed within English, by derivation. Etymons: omega n., -tron suffix.

Etymology: < omega n. + -tron suffix, ω being the symbol of angular frequency.

Physics.

A mass spectrometer that employs the principle of the cyclotron to identify and measure gases at very low pressures.A radio-frequency electric field is applied at right angles to a magnetic field so that charged particles having a certain charge-to-mass ratio impinge on a collecting electrode.

ΘΚΠ

the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > types of spectrometry or spectroscopy > [noun] > analysis of mass > employing cyclotron principle

omegatron1949

1949 J. A. Hipple et al. in Physical Rev. 76 1878/1 Since this device measures ω, it is suggested that it be called the omegatron.

1966 W. Summer tr. E. von Angerer & H. Ebert Physical Lab. Handbk. x. 208 The omegatron..is useful as a gauge down to 10⁻¹² torr.

1975 Nature 6 Feb. 408/2 Partial pressures were measured with an omegatron radio-frequency mass spectrometer which formed part of the UHV section.

2000 Physics of Plasmas 7 4573 The helium is ionized in a hotter region of the edge plasma and is transported to the omegatron.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	omegatron
释义	omegatronn. Brit. /ˈəʊmᵻɡətrɒn/, U.S. /oʊˈmeɪɡəˌtrɑn/, /oʊˈmɛɡəˌtrɑn/ Origin: Formed within English, by derivation. Etymons: omega n., -tron suffix. Etymology: < omega n. + -tron suffix, ω being the symbol of angular frequency. Physics. A mass spectrometer that employs the principle of the cyclotron to identify and measure gases at very low pressures.A radio-frequency electric field is applied at right angles to a magnetic field so that charged particles having a certain charge-to-mass ratio impinge on a collecting electrode. ΘΚΠ the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > types of spectrometry or spectroscopy > [noun] > analysis of mass > employing cyclotron principle omegatron1949 1949 J. A. Hipple et al. in Physical Rev. 76 1878/1 Since this device measures ω, it is suggested that it be called the omegatron. 1966 W. Summer tr. E. von Angerer & H. Ebert Physical Lab. Handbk. x. 208 The omegatron..is useful as a gauge down to 10⁻¹² torr. 1975 Nature 6 Feb. 408/2 Partial pressures were measured with an omegatron radio-frequency mass spectrometer which formed part of the UHV section. 2000 Physics of Plasmas 7 4573 The helium is ionized in a hotter region of the edge plasma and is transported to the omegatron. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1949
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