annihilation radiation

消滅放射線

WordNet

1. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (同)radioactivity
2. energy that is radiated or transmitted in the form of rays or waves or particles
3. the act of spreading outward from a central source
4. a radial arrangement of nerve fibers connecting different parts of the brain
5. the spread of a group of organisms into new habitats
6. destruction by annihilating something (同)obliteration
7. total destruction; "bomb tests resulted in the annihilation of the atoll" (同)disintegration

PrepTutorEJDIC

1. 〈U〉(光・熱・放射能などの)発散,放射 / 〈C〉放射物;放射線;輻射(ふくしゃ)熱 / 〈C〉(喜び・幸福感などの)発散《+『of』+『名』》 / =radioactivity
2. 全滅,絶滅

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2019/05/26 16:50:48」(JST)

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[Wiki en表示]

Annihilation radiation is a term used in Gamma spectroscopy for the gamma radiation produced when a particle and its antiparticle collide and annihilate. Most commonly, this refers to 511-keV gamma rays produced by a normal (negative) electron colliding with a positron.

A Germanium detector spectrum showing the annihilation radiation peak (under the arrow). Note the width of the peak compared to the other gamma rays visible in the spectrum.

Annihilation radiation is not monoenergetic, unlike gamma rays produced by radioactive decay. The production mechanism of annihilation radiation introduces Doppler broadening. The annihilation peak produced in a gamma spectrum by annihilation radiation therefore has a higher full width at half maximum (FWHM) than other gamma rays in spectrum. The difference is more apparent with high resolution detectors, such as Germanium detectors, than with low resolution detectors such as Sodium iodide detectors.

Because of their well-defined energy (511 keV) and characteristic, Doppler-broadened shape, annihilation radiation can often be useful in defining the energy calibration of a gamma ray spectrum.

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English Journal

• In vitro and in vivo tumor annihilation by near-infrared photothermal effect of a NiFe₂O₄/C nanocomposite.

• Gorgizadeh M1, Azarpira N2, Sattarahmady N3.
• Colloids and surfaces. B, Biointerfaces.Colloids Surf B Biointerfaces.2018 Oct 1;170:393-400. doi: 10.1016/j.colsurfb.2018.06.034. Epub 2018 Jun 19.
• PMID 29945051

• Microstructural Distinction of Electrospun Nanofibrous Drug Delivery Systems Formulated with Different Excipients.

• Kazsoki A1, Szabó P1, Domján A2, Balázs A2, Bozó T3, Kellermayer M3, Farkas A4, Balogh-Weiser D4, Pinke B5, Darcsi A6, Béni S6, Madarász J7, Szente L8, Zelkó R1.
• Molecular pharmaceutics.Mol Pharm.2018 Sep 4;15(9):4214-4225. doi: 10.1021/acs.molpharmaceut.8b00646. Epub 2018 Aug 1.
• PMID 30024759

• Investigation of Helium Behavior in RAFM Steel by Positron Annihilation Doppler Broadening and Thermal Desorption Spectroscopy.

• Shen Z1, Guo L2, Zhang W3, Jin S4, Cao X5, Long Y6, Wei Y7.
• Materials (Basel, Switzerland).Materials (Basel).2018 Aug 24;11(9). pii: E1523. doi: 10.3390/ma11091523.
• PMID 30149538

Japanese Journal

• Project 6 Irradiation Effects on Nuclear Advanced Materials Irradiated by Particles with High Energy

• KURRI Progress Report 2014(APRIL 2014 – MARCH 2015), 23-34, 2015-07
• NAID 120005752959

• Vacancies in In

• Appl. Phys. Express 8(5), 051002, 2015-04-30
• NAID 150000110547

• s=10.866 GeVでのepi^+pi^-反応の振幅解析

• Physical Review D 91(7), 072003\_1-072003\_16, 2015-04
• NAID 120005690594

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★リンクテーブル★

リンク元	「消滅放射線」
関連記事	「radiation」

「消滅放射線」

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英

annihilation radiation

関

電子、ポジトロンカメラ

「radiation」

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• n.

• 放射、放射線
• 放射物
• 輻射、放熱