Measurement of the 175Hf half-life

Kmak, K. N.; Neupane, S.; Kolos, K.; Despotopulos, J. D.; Sammis, B. N.; Wooddy, T.; Scielzo, N. D.

doi:10.1103/physrevc.111.024308

Measurement of the ¹⁷⁵Hf half-life

Journal Article · Mon Feb 10 00:00:00 EST 2025 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.111.024308· OSTI ID:2533633

^[1]; ^[1]; ^[1]; Despotopulos, J. D. ^[1]; ^[1]; ^[1]; ^[1]

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Hafnium-175 is a useful radioisotope for numerous applications; however, its evaluated half-life (70 ± 2 days) has a large uncertainty. To enable a new measurement of the half-life, ¹⁷⁵Hf was produced via proton irradiation of natural lutetium and chemically purified. The ¹⁷⁵Hf sample was counted approximately once a month with three high-purity germanium detectors for 13 months (~5.5 half-lives). A ¹³³Ba standard was counted in an identical manner to quantify systematic uncertainties over the measurement period. In conclusion, the measured ¹⁷⁵Hf half-life is 69.90 ± 0.07 days, in agreement with the evaluated value, but with significantly reduced uncertainty.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 2533633

Report Number(s):: LLNL--JRNL-860562; 1091774

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 111; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (25)

Neutron activation analysis of an Egyptian monazite ore sample Eissa, E. A.; Rofail, N. B.; Ashmawy, L. S. Czechoslovak Journal of Physics, Vol. 49, Issue S1 https://doi.org/10.1007/s10582-999-0042-3	journal	January 1999
Critical evaluation of the determination of zirconium and hafnium in meteorites by instrumental and radiochemical neutron activation analysis Burger, Mario; Krähenbühl, Urs Analytica Chimica Acta, Vol. 254, Issue 1-2 https://doi.org/10.1016/0003-2670(91)90018-Z	journal	November 1991
ESCL8R and LEVIT8R: Software for interactive graphical analysis of HPGe coincidence data sets Radford, D. C. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 361, Issue 1-2 https://doi.org/10.1016/0168-9002(95)00183-2	journal	July 1995
The rotational band in 175Lu and the Q-value of the electron-capture decay Johansen, K. H.; Bengtson, B.; Hansen, P. G. Nuclear Physics A, Vol. 133, Issue 1 https://doi.org/10.1016/0375-9474(69)90460-6	journal	August 1969
A half-life measurement of the 343.4 keV level in 175Lu Höjeberg, M.; Malmskog, S. G. Nuclear Physics A, Vol. 134, Issue 1 https://doi.org/10.1016/0375-9474(69)90685-X	journal	September 1969
Three- and five-quasiparticle isomers, rotational bands and residual interactions in 175Hf Dracoulis, G. D.; Walker, P. M. Nuclear Physics A, Vol. 342, Issue 2 https://doi.org/10.1016/0375-9474(80)90259-6	journal	June 1980
Recommended nuclear data for use in the k0 standardization of neutron activation analysis De Corte, Frans; Simonits, András Atomic Data and Nuclear Data Tables, Vol. 85, Issue 1 https://doi.org/10.1016/S0092-640X(03)00036-6	journal	September 2003
Half life of 175Hf Kaihong, Fang; Dawei, Wang; Shaobo, Yang Applied Radiation and Isotopes, Vol. 70, Issue 10 https://doi.org/10.1016/j.apradiso.2012.06.010	journal	October 2012
Corrosive and mechanical resistance of MgO ceramics under metallizing and mild chlorination of spent nuclear fuel in molten salts Golosov, O. A.; Khvostov, S. S.; Glushkova, N. V. Ceramics International, Vol. 47, Issue 3 https://doi.org/10.1016/j.ceramint.2020.09.171	journal	February 2021
Nuclear Data Sheets for A = 175 Basunia, M. Shamsuzzoha Nuclear Data Sheets, Vol. 102, Issue 4 https://doi.org/10.1016/j.nds.2004.09.002	journal	August 2004
Nuclear Data Sheets for A = 181 Wu, S. -C. Nuclear Data Sheets, Vol. 106, Issue 3 https://doi.org/10.1016/j.nds.2005.11.001	journal	November 2005
Nuclear Data Sheets for A = 133 Khazov, Yu.; Rodionov, A.; Kondev, F. G. Nuclear Data Sheets, Vol. 112, Issue 4 https://doi.org/10.1016/j.nds.2011.03.001	journal	April 2011
New approach to precisely measure γ -ray intensities for long-lived fission products, with results for the decay of 95Zr Kolos, K.; Hennessy, A. M.; Scielzo, N. D. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1000 https://doi.org/10.1016/j.nima.2021.165240	journal	June 2021
Measurement of the natLu(p,x)175Hf excitation function Bennett, Megan E.; Mayorov, Dmitriy A.; Chapkin, Kyle D. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 276 https://doi.org/10.1016/j.nimb.2012.01.039	journal	April 2012
Determination of hafnium in zirconium and its alloys by stable isotope dilution-neutron activation analysis Yonezawa, Chushiro.; Komori, Takuji. Analytical Chemistry, Vol. 55, Issue 13 https://doi.org/10.1021/ac00263a012	journal	November 1983
Isothermal gas chromatography of chlorides of Zr and Hf as Rf homologs Kaneko, T.; Ono, S.; Goto, S. Journal of Radioanalytical and Nuclear Chemistry, Vol. 255, Issue 2 https://doi.org/10.1023/A:1022577409113	journal	February 2003
Isotopic Compositions of the Elements 1997 Rosman, K. J. R.; Taylor, P. D. P. Journal of Physical and Chemical Reference Data, Vol. 27, Issue 6 https://doi.org/10.1063/1.556031	journal	November 1998
Development of Chemical Procedures for Isotope Harvesting: Separation of Trace Hafnium from Tungsten Kmak, Kelly N.; Despotopulos, John D.; Scielzo, Nicholas D. Solvent Extraction and Ion Exchange, Vol. 40, Issue 7 https://doi.org/10.1080/07366299.2022.2079502	journal	June 2022
Hf175, a New Radioactive Isotope of Hafnium Wilkinson, Geoffrey; Hicks, Harry G. Physical Review, Vol. 75, Issue 4 https://doi.org/10.1103/PhysRev.75.696	journal	February 1949
The Radiations from Hafnium Burson, S. B.; Blair, K. W.; Keller, H. B. Physical Review, Vol. 83, Issue 1 https://doi.org/10.1103/PhysRev.83.62	journal	July 1951
Precise measurements of the γ -ray intensities following the β decay of Ce144 and Nd147 Kolos, K.; Scielzo, N. D.; Iacob, V. E. Physical Review C, Vol. 110, Issue 2 https://doi.org/10.1103/PhysRevC.110.024307	journal	August 2024
Nuclear moments and charge radiusof175Hf from optical measurement of hyperfine structure Jin, W. G.; Wakasugi, M.; Hies, M. G. Physical Review C, Vol. 55, Issue 3 https://doi.org/10.1103/PhysRevC.55.1545	journal	March 1997
Nuclear Reactions Induced in Tantalum by Protons of Energy up to 84 mev Rao, C. L.; Yaffe, L. Canadian Journal of Chemistry, Vol. 41, Issue 10 https://doi.org/10.1139/v63-372	journal	October 1963
Development of an automated batch-type solid-liquid extraction apparatus and extraction of Zr, Hf, and Th by triisooctylamine from HCl solutions for chemistry of element 104, Rf Kasamatsu, Yoshitaka; Kino, Aiko; Yokokita, Takuya Radiochimica Acta, Vol. 103, Issue 7 https://doi.org/10.1515/ract-2014-2283	journal	April 2015
Ion-exchange behavior of Zr and Hf as homologues of element 104, Rf, in H2SO4 and H2SO4/HClO4 mixed solutions Li, Z. J.; Toyoshima, A.; Tsukada, Kazuaki Radiochimica Acta, Vol. 98, Issue 1 https://doi.org/10.1524/ract.2010.1681	journal	January 2010

Similar Records

THE HALF-LIFE OF $sup 181$Hf

Journal Article · Thu Sep 01 00:00:00 EDT 1960 · J. Inorg. & Nuclear Chem. · OSTI ID:4154591

THE DETERMINATION OF THE $beta$ HALF LIFE OF Lu$sup 176$ BY THE DETECTION OF RADIOGENIC Hf$sup 17$$sup 6$

Journal Article · Mon Mar 31 23:00:00 EST 1958 · Zeitschrift fuer Naturforschung (West Germany) Divided into Z. Nautrforsch., A, and Z. Naturforsch., B: Anorg. Chem., Org. Chem., Biochem., Biophys., · OSTI ID:4330564

Precise half-life determination of ¹³¹Ba and ¹²⁵Xe

Journal Article · Thu Oct 30 20:00:00 EDT 2025 · Applied Radiation and Isotopes · OSTI ID:3010975

Related Subjects

150 ≤ A ≤ 189
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Electromagnetic transitions
Lifetimes & widths
Nuclear structure & decays

Measurement of the 175Hf half-life

Citation Formats

References (25)

Similar Records

Related Subjects

Measurement of the ¹⁷⁵Hf half-life