Half-life determination of 88Y and 89Sr

doi:10.1016/j.apradiso.2004.06.002

Applied Radiation and Isotopes

Volume 62, Issue 1, January 2005, Pages 11-15

https://doi.org/10.1016/j.apradiso.2004.06.002 Get rights and content

Abstract

Half-life measurements have been carried out at LNHB for ⁸⁸Y using a 4π γ-ionisation chamber and for ⁸⁹Sr using a proportional counter. The determined half-life values and associated standard uncertainties are 106.63±0.05 d for ⁸⁸Y and 50.65±0.05 d for ⁸⁹Sr, being consistent with relevant values reported in literature. Based on the present results and relevant literature values revised recommended half-life values and associated standard uncertainties are proposed, viz. 106.626±0.021 d for ⁸⁸Y and 50.57±0.03 d for ⁸⁹Sr.

Introduction

Half-life measurements have been performed since the early days of radioactivity and the need for highly accurate data explains the abundance of such measurements. For example, accurate data are required for calibration purposes and are given in certificates for standard reference materials. The Laboratoire National Henri Becquerel (LNHB), which is responsible in France for two units of ionising radiation, i.e. the Becquerel and the Gray, carried out measurements using different methods to determine half-lives. The present work proposes revised half-life values for ⁸⁸Y and ⁸⁹Sr. All the uncertainties given in this work are combined standard uncertainties, the coverage factor being k=1.

Section snippets

Half-life of ⁸⁸Y

The radionuclide ⁸⁸Y is currently used as a standard for calibration of gamma-ray detection systems. The high relative intensities and different energies (>99%, 1836 keV; ≈94%, 898 keV) make this radionuclide suitable as a standard for efficiency–calibration curves of gamma-ray detectors (Bambynek et al., 1991).

Half-life of ⁸⁹Sr

The radionuclide ⁸⁹Sr is a fission product that has been studied during the 1960s of the previous century. Nowadays, as a pure beta emitter having a short half-life, this radionuclide is used in therapy of painful bone metastases (Dafermou et al., 2001). Though this radionuclide is used presently in medicine, the last measurements of its half-life were published 30 years ago. Taking advantage of the activity measurement in the frame of LNHB contribution to the SIR (Système International de

Conclusion

The results of the ⁸⁸Y and ⁸⁹Sr half-life determinations carried out are in good agreement with the best (most recent and/or evaluated) values in the literature. This agreement enables proposal of a revised recommended value and associated standard uncertainty for the half-life of both radionuclides.

References (26)

S. Baba et al.
Half-lives of some fission product nuclides
J. Inorg. Nucl. Chem
(1971)
J. Bouchard
MTR2a discriminator and dead-time module used in counting systems
Appl. Radiat. Isot
(2000)
E. Funck et al.
⁵⁶Co standardization and half-life
Nucl. Instrum. Methods
(1992)
H. Houtermans et al.
Half-lives of 35 radionuclides
Int. J. Appl. Radiat
(1980)
S.I. Kafala et al.
Testing of data evaluation methods
Nucl. Instru. Methods. A
(1994)
A. Kjelberg et al.
Fission of uranium with 170 MeV protons
Nucl. Phys
(1956)
F. Lagoutine et al.
Half-lives of some radionuclides
Int. J. Appl. Radiat. Isot
(1975)
R.H. Martin et al.
A measurement of half-lives of ⁵⁴Mn, ⁵⁷Co, ⁵⁹Fe, ⁸⁸Y, ⁹⁵Nb, ¹⁰⁹Cd, ¹³³Ba, ¹³⁴Cs, ¹⁴⁴Ce, ¹⁵²Eu
Nucl. Instr. Methods. A
(1997)
R.G. Osmond et al.
The half-life of ⁸⁹Sr
J. Inorg. Nucl. Chem
(1959)
A. Rytz
The international reference system for activity measurements of γ-ray emitting nuclides
Appl. Radiat. Isot
(1983)

A.R. Sattler

Decay of ⁸⁹Sr

Nucl. Phys

(1962)

M.P. Unterweger et al.

New and revised half-life measurements results

Nucl. Instrum. Methods. A

(1992)

K.F. Walz et al.

Half life measurements at the PTB

Int. J. Appl. Radiat. Isot

(1983)

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Nuclear Data Sheets for A = 88
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The experimental results from the various reaction and radioactive decay studies leading to nuclides in the A=88 mass chain have been reviewed. Nuclides ranging from Ge (Z=32) to Ru (Z=44) are included. For these nuclei, level and decay schemes, as well as tables of nuclear properties, are given. This work supersedes the previous evaluation of the data on these nuclides (G. Mukherjee, A.A. Sonzogni – Nucl.Data Sheets 105, 419 (2005)).
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Half-life determination of 88Y and 89Sr

Abstract

Introduction

Section snippets

Half-life of 88Y

Half-life of 89Sr

Conclusion

J. Inorg. Nucl. Chem

Appl. Radiat. Isot

Nucl. Instrum. Methods

Int. J. Appl. Radiat

Nucl. Instru. Methods. A

Nucl. Phys

Int. J. Appl. Radiat. Isot

Nucl. Instr. Methods. A

J. Inorg. Nucl. Chem

Appl. Radiat. Isot

Nucl. Phys

Nucl. Instrum. Methods. A

Int. J. Appl. Radiat. Isot

Half-life determination of ⁸⁸Y and ⁸⁹Sr

Half-life of ⁸⁸Y

Half-life of ⁸⁹Sr