photoionizev.

Brit.

/ˌfəʊtəʊˈʌɪənʌɪz/, U.S.

/ˌfoʊdoʊˈaɪəˌnaɪz/

Forms: 1900s– photoionise, 1900s– photoionize.

Origin: Formed within English, by compounding. Etymons: photo- comb. form, ionize v.²

Etymology: < photo- comb. form + ionize v.², after photoionization n.

Physics and Astronomy.

transitive. To ionize by the agency of electromagnetic radiation.

ΘΚΠ

the world > matter > physics > atomic physics > ion > ionization > produce ions [verb (transitive)] > by electromagnetic radiation

photoionize1974

1937 Proc. Royal Soc. A. 160 170 Let us now examine how O₂ is photo-ionized to O₂⁺.

1974 Rev. Sci. Instruments 45 662/2 The approach consists of photoionizing some species in a field-free region and extracting a portion of the photo~electrons thus produced into a beam.

1977 Jrnl. Royal Soc. Arts 125 767/1 A second laser beam was..used to photoionize the excited magnesium atoms.

1996 Astron. & Astrophysics 311 25 This appears to rule out the possibility that the clouds are photoionised by the quasar.

Derivatives

photoˈionized adj.

ΘΚΠ

the world > matter > physics > atomic physics > ion > ionization > [adjective] > subjected to electromagnetic radiation

photoionized1962

1962 Jrnl. Optical Soc. Amer. 52 1241/1 Different responses at short wavelengths result from the different thicknesses of the surface layer from which the photo-ionized carriers must diffuse before recombination.

1997 Science 3 Jan. 49/3 The cometary ion flux..can be estimated by equating the photoionized part of the cometary gas outflow to the flow of the cometary ions picked up by the solar wind.

photoˈionizing adj.

ΘΚΠ

the world > matter > physics > atomic physics > ion > ionization > [noun] > ionization produced by electromagnetic radiation > bringing about of

photoionizing1953

1953 J. M. Meek & J. D. Craggs Electr. Breakdown of Gases i. 15 Photoionizing radiations.

2003 Astrophysical Jrnl. 582 893 The photoionizing flux from the central source is assumed to arise from both the quiescent star.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	photoionize
释义	photoionizev. Brit. /ˌfəʊtəʊˈʌɪənʌɪz/, U.S. /ˌfoʊdoʊˈaɪəˌnaɪz/ Forms: 1900s– photoionise, 1900s– photoionize. Origin: Formed within English, by compounding. Etymons: photo- comb. form, ionize v.² Etymology: < photo- comb. form + ionize v.², after photoionization n. Physics and Astronomy. transitive. To ionize by the agency of electromagnetic radiation. ΘΚΠ the world > matter > physics > atomic physics > ion > ionization > produce ions [verb (transitive)] > by electromagnetic radiation photoionize1974 1937 Proc. Royal Soc. A. 160 170 Let us now examine how O₂ is photo-ionized to O₂⁺. 1974 Rev. Sci. Instruments 45 662/2 The approach consists of photoionizing some species in a field-free region and extracting a portion of the photo~electrons thus produced into a beam. 1977 Jrnl. Royal Soc. Arts 125 767/1 A second laser beam was..used to photoionize the excited magnesium atoms. 1996 Astron. & Astrophysics 311 25 This appears to rule out the possibility that the clouds are photoionised by the quasar. Derivatives photoˈionized adj. ΘΚΠ the world > matter > physics > atomic physics > ion > ionization > [adjective] > subjected to electromagnetic radiation photoionized1962 1962 Jrnl. Optical Soc. Amer. 52 1241/1 Different responses at short wavelengths result from the different thicknesses of the surface layer from which the photo-ionized carriers must diffuse before recombination. 1997 Science 3 Jan. 49/3 The cometary ion flux..can be estimated by equating the photoionized part of the cometary gas outflow to the flow of the cometary ions picked up by the solar wind. photoˈionizing adj. ΘΚΠ the world > matter > physics > atomic physics > ion > ionization > [noun] > ionization produced by electromagnetic radiation > bringing about of photoionizing1953 1953 J. M. Meek & J. D. Craggs Electr. Breakdown of Gases i. 15 Photoionizing radiations. 2003 Astrophysical Jrnl. 582 893 The photoionizing flux from the central source is assumed to arise from both the quiescent star. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < v.1937
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