radioactivationn.

Brit.

/ˌreɪdɪəʊaktᵻˈveɪʃn/, U.S.

/ˌreɪdioʊˌæktəˈveɪʃ(ə)n/

Origin: Formed within English, by compounding. Etymons: radio- comb. form², activation n.

Etymology: < radio- comb. form² + activation n., after radioactive adj. Compare earlier radioactivating n.

Chemistry and Physics.

The process of making something radioactive.

ΘΚΠ

the world > matter > physics > atomic nucleus > radioactivity > making radioactive > [noun]

radioactivating1903

radioactivation1910

1910 Lancet 15 Oct. 1126-1128 Radio-activity of certain waters, or their radio-activation brought about by the action of bromide of radium.

1938 Brit. Chem. Abstr. A. i. 112/2 (heading) Artificial disintegration and radioactivation.

1960 Times 19 July (Royal Soc. Suppl.) p. xv/1 The geochemist is particularly trying..new techniques of analysis such as the isotope dilution and radioactivation methods.

1971 P. Kruger Princ. Activation Anal. iii. 62 The most copious and controllable sources of neutrons for radioactivation are found in nuclear reactors.

1996 Jrnl. Nucl. Materials 233 A. 592 Titanium was selected because it satisfies the requirement of reduced radioactivation of the TPX vacuum vessel.

Compounds

radioactivation analysis n. chemical analysis in which a sample is made radioactive by exposure to radiation and its components are then identified, and their concentrations measured, by radiochemical method; also called activation analysis.

ΘΚΠ

the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > other analytical techniques

alkalimetry1817

refraction1831

Hofmann method1876

cryoscopy1885

Reichert–Meissl1887

oxidimetry1896

Hofmann exhaustive methylation1938

workup1942

radioactivation analysisa1947

neutron activation analysis1947

activation analysis1948

a1947 H. M. Clark & R. T. Overman in Determination Trace Elem. by Radioactivation Anal. (U.S. Atomic Energy Comm. Rep. MDDC–1329) (1947) 1 The potential uses of radioactivation analysis for the determination of trace amounts of substances have been recognized for some time.

1955 C. L. Comar Radioisotopes Biol. & Agric. x. 415 Radioactivation analysis of manganese in aluminum was accomplished readily, since the aluminum radioisotope has a half-life of 2.3 min, whereas that of manganese has a half-life of 2.59 hr.

1994 Jrnl. Nucl. Materials 212–5 A. 823 The impurity concentrations in the materials were measured by neutron radioactivation analysis.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	radioactivation
释义	radioactivationn. Brit. /ˌreɪdɪəʊaktᵻˈveɪʃn/, U.S. /ˌreɪdioʊˌæktəˈveɪʃ(ə)n/ Origin: Formed within English, by compounding. Etymons: radio- comb. form², activation n. Etymology: < radio- comb. form² + activation n., after radioactive adj. Compare earlier radioactivating n. Chemistry and Physics. The process of making something radioactive. ΘΚΠ the world > matter > physics > atomic nucleus > radioactivity > making radioactive > [noun] radioactivating1903 radioactivation1910 1910 Lancet 15 Oct. 1126-1128 Radio-activity of certain waters, or their radio-activation brought about by the action of bromide of radium. 1938 Brit. Chem. Abstr. A. i. 112/2 (heading) Artificial disintegration and radioactivation. 1960 Times 19 July (Royal Soc. Suppl.) p. xv/1 The geochemist is particularly trying..new techniques of analysis such as the isotope dilution and radioactivation methods. 1971 P. Kruger Princ. Activation Anal. iii. 62 The most copious and controllable sources of neutrons for radioactivation are found in nuclear reactors. 1996 Jrnl. Nucl. Materials 233 A. 592 Titanium was selected because it satisfies the requirement of reduced radioactivation of the TPX vacuum vessel. Compounds radioactivation analysis n. chemical analysis in which a sample is made radioactive by exposure to radiation and its components are then identified, and their concentrations measured, by radiochemical method; also called activation analysis. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > other analytical techniques alkalimetry1817 refraction1831 Hofmann method1876 cryoscopy1885 Reichert–Meissl1887 oxidimetry1896 Hofmann exhaustive methylation1938 workup1942 radioactivation analysisa1947 neutron activation analysis1947 activation analysis1948 a1947 H. M. Clark & R. T. Overman in Determination Trace Elem. by Radioactivation Anal. (U.S. Atomic Energy Comm. Rep. MDDC–1329) (1947) 1 The potential uses of radioactivation analysis for the determination of trace amounts of substances have been recognized for some time. 1955 C. L. Comar Radioisotopes Biol. & Agric. x. 415 Radioactivation analysis of manganese in aluminum was accomplished readily, since the aluminum radioisotope has a half-life of 2.3 min, whereas that of manganese has a half-life of 2.59 hr. 1994 Jrnl. Nucl. Materials 212–5 A. 823 The impurity concentrations in the materials were measured by neutron radioactivation analysis. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1910
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