Measurement of the 225Ac half-life

被引：56

作者：

Pomme, S. ^{[1
]}

Marouli, M. ^{[1
]}

Suliman, G. ^{[1
]}

Dikmen, H. ^{[1
]}

Van Ammel, R. ^{[1
]}

Jobbagy, V. ^{[1
]}

Dirican, A. ^{[1
]}

Stroh, H. ^{[1
]}

Paepen, J. ^{[1
]}

Bruchertseifer, F. ^{[2
]}

Apostolidis, C. ^{[2
]}

Morgenstern, A. ^{[2
]}

机构：

[1] Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, B-2440 Geel, Belgium

[2] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany

来源：

APPLIED RADIATION AND ISOTOPES | 2012年 / 70卷 / 11期

关键词：

Half-life; Ac-225; Radionuclide metrology; Nuclear data; Radiotherapy; Targeted alpha therapy; PRIMARY STANDARDIZATION; ALPHA; AC-225/BI-213; TH-229;

D O I：

10.1016/j.apradiso.2012.07.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Ac-225 half-life was determined by measuring the activity of Ac-225 sources as a function of time, using various detection techniques: alpha-particle counting with a planar silicon detector at a defined small solid angle and in a nearly-2 pi geometry, 4 pi alpha + beta counting with a windowless CsI sandwich spectrometer and with a pressurised proportional counter, gamma-ray spectrometry with a HPGe detector and with a NaI(TI) well detector. Depending on the technique, the decay was followed for 59-141 d, which is about 6-14 times the Ac-225 half-life. The six measurement results were in good mutual agreement and their mean value is T-1/2(Ac-225)=9.920 (3) d. This half-life value is more precise and better documented than the currently recommended value of 10.0 d, based on two old measurements lacking uncertainty evaluations. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2608 / 2614

页数：7

共 50 条

[1] Measurement of the activity and determination of the half-life of 225Ac at POLATOM
Broda, R.
Ziemek, T.
Marganiec-Galazka, J.
Czudek, M.
Kossert, K.
Listkowska, A.
Lech, E.
Tyminski, Z.
Saganowski, P.
Coulon, R.
Michotte, C.
APPLIED RADIATION AND ISOTOPES, 2023, 201
[2] Primary standardization and half-life determination of 225Ac at NRC
Galea, R.
Moore, K.
APPLIED RADIATION AND ISOTOPES, 2024, 203
[3] Refinement of the Ac-225 Half-Life
Bolonkin, A. S.
Dunin, A. V.
RADIOCHEMISTRY, 2013, 55 (03) : 257 - 260
[4] Determination of the activity of 225Ac and of the half-lives of 213Po and 225Ac
Kossert, Karsten
Takacs, Marcell Peter
Naehle, Ole
APPLIED RADIATION AND ISOTOPES, 2020, 156
[5] 225Ac Metallofullerene: Toward 225Ac Nanogenerator in Fullerene
Akiyama, Kazuhiko
Haba, Hiromitsu
Sueki, Keisuke
Tsukada, Kazuaki
Asai, Masato
Toyoshima, Atsushi
Nagame, Yuichiro
Katada, Motomi
CHEMISTRY LETTERS, 2009, 38 (10) : 978 - 979
[6] 225AC DECAY
DZHELEPOV, BS
ZOLOTAVIN, AV
IVANOV, RB
MIKHAILOVA, MA
SERGEEV, VO
IZVESTIYA AKADEMII NAUK SSSR SERIYA FIZICHESKAYA, 1969, 33 (10): : 1607 - +
[7] A metallofullerene that encapsulates 225Ac
K. Akiyama
H. Haba
K. Tsukada
M. Asai
A. Toyoshima
K. Sueki
Y. Nagame
M. Katada
Journal of Radioanalytical and Nuclear Chemistry, 2009, 280 : 329 - 331
[8] THE HALF-LIFE OF AC C'
LEININGER, RF
SEGRE, E
SPIESS, FN
PHYSICAL REVIEW, 1951, 82 (02): : 334 - 334
[9] A metallofullerene that encapsulates 225Ac
Akiyama, K.
Haba, H.
Tsukada, K.
Asai, M.
Toyoshima, A.
Sueki, K.
Nagame, Y.
Katada, M.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2009, 280 (02) : 329 - 331
[10] Measurement of 227AC impurity in 225Ac using decay energy spectroscopy
Tollefson, A. D.
Smith, C. M.
Carpenter, M. H.
Croce, M. P.
Fassbender, M. E.
Koehler, K. E.
Lilley, L. M.
O'Brien, E. M.
Schmidt, D. R.
Stein, B. W.
Ullom, J. N.
Yoho, M. D.
Mercer, D. J.
APPLIED RADIATION AND ISOTOPES, 2021, 172

← 1 2 3 4 5 →