NSR Query Results
Output year order : Descending NSR database version of May 10, 2024. Search: Author = M.P.Unterweger Found 21 matches. 2016PO08 Phys.Lett. B 761, 281 (2016) S.Pomme, H.Stroh, J.Paepen, R.Van Ammel, M.Marouli, T.Altzitzoglou, M.Hult, K.Kossert, O.Nahle, H.Schrader, F.Juget, C.Bailat, Y.Nedjadi, F.Bochud, T.Buchillier, C.Michotte, S.Courte, M.W.van Rooy, M.J.van Staden, J.Lubbe, B.R.S.Simpson, A.Fazio, P.De Felice, T.W.Jackson, W.M.Van Wyngaardt, M.I.Reinhard, J.Golya, S.Bourke, T.Roy, R.Galea, J.D.Keightley, K.M.Ferreira, S.M.Collins, A.Ceccatelli, M.Unterweger, R.Fitzgerald, D.E.Bergeron, L.Pibida, L.Verheyen, M.Bruggeman, B.Vodenik, M.Korun, V.Chiste, M.-N.Amiot Evidence against solar influence on nuclear decay constants RADIOACTIVITY 209Po, 226Ra, 228Th, 230U, 241Am(α), 3H, 14C, 60Co, 85Kr, 90Sr, 124Sb, 134,137Cs(β-), 54Mn, 55Fe, 57Co, 82,85Sr, 109Cd, 133Ba(EC), 22Na, 65Zn, 207Bi(EC), (β+), 152Eu(β-), (EC), (β+); measured decay products; deduced decay constant vs. solar activity, exponential nature of nuclear decay.
doi: 10.1016/j.physletb.2016.08.038
2014UN01 Appl.Radiat.Isot. 87, 92 (2014); Erratum Appl.Radiat.Isot. 159, 108976 (2020) Update of NIST half-life results corrected for ionization chamber source-holder instability RADIOACTIVITY 18F, 22Na, 51Cr, 54Mn, 57,58Co, 62Cu, 65Zn, 67Ga, 85Sr, 88Y, 109Cd, 111In, 113Sn, 123,125I, 127Xe, 139Ce, 153Sm, 169Yb, 181W, 195Au, 201,202Tl, 203Pb, 207Bi(EC), 24Na, 32P, 46Sc, 59Fe, 60Co, 75Se, 85Kr, 99Mo, 99Tc, 103Ru, 110Ag, 125Sb, 131I, 133Xe, 133Ba, 134,137Cs, 140Ba, 140La, 141,144Ce, 152,154,155Eu, 153Gd, 166Ho, 186,188Re, 188W, 192Ir, 198Au, 203Hg, 228Th(β-), 131Xe(IT); analyzed decay products, Eβ, Iβ, Eγ, Iγ; deduced T1/2 updated values, fixed mistake in the propagation of the correction factor, f, and its associated uncertainty. Comparison with the previous measurements at NIST.
doi: 10.1016/j.apradiso.2013.11.017
2012UN01 Appl.Radiat.Isot. 70, 1892 (2012) Unexpected bias in NIST 4πγ ionization chamber measurements RADIOACTIVITY 85Kr, 133Xe(β-), 241Am(α), 125I(EC); measured decay products, Eγ, Iγ; deduced corrected values for T1/2 and low-energy γ-rays.
doi: 10.1016/j.apradiso.2012.02.023
2009PI02 Appl.Radiat.Isot. 67, 636 (2009) L.Pibida, R.Fitzgerald, M.Unterweger, M.M.Hammond, D.Golas Measurements of the 82Sr half-life RADIOACTIVITY 82Sr(EC); measured half-life.
doi: 10.1016/j.apradiso.2008.11.017
2005LI66 J.Radioanal.Nucl.Chem. 263, 311 (2005) R.M.Lindstrom, M.Blaauw, M.P.Unterweger QA/QC Procedures, Validation Method, Traceability and Intercomparisons; The half-lives of 24Na, 42K, and 198Au RADIOACTIVITY 24Na(β-), 42K(β-), 198Au(β-); measured Eγ, Iγ, isotopic T1/2.
doi: 10.1007/s10967-005-0587-y
2004UN01 Appl.Radiat.Isot. 60, 325 (2004) Ionization chamber measurements of the half-lives of 24Na, 42K, 76As and 198Au RADIOACTIVITY 24Na, 42K, 76As, 198Au(β-); measured T1/2. Ionization chamber, comparison with previous results.
doi: 10.1016/j.apradiso.2003.11.035
2002UN02 Appl.Radiat.Isot. 56, 125 (2002) Half-Life Measurements at the National Institute of Standards and Technology RADIOACTIVITY 22Na, 133Ba, 207Bi(EC); 60Co, 85Kr, 125Sb, 137Cs, 155Eu(β-); 152,154Eu(EC), (β-); measured T1/2. Comparison with previous results. COMPILATION 3H, 18F, 22,24Na, 32P, 46Sc, 51Cr, 54Mn, 57,58,60Co, 59Fe, 62Cu, 65Zn, 67Ga, 75Se, 85Kr, 85Sr, 88Y, 99Mo, 99mTc, 103Ru, 109Cd, 110mAg, 111In, 113,117mSn, 123,125,131I, 125Sb, 127,131m,133Xe, 133,140Ba, 134,137Cs, 139,141,144Ce, 140La, 152,154,155Eu, 153Gd, 153Sm, 166Ho, 169Yb, 177Lu, 181,188W, 186,188Re, 192Ir, 195,198Au, 201,202Tl, 203Hg, 203Pb, 207Bi, 228Th; compiled T1/2.
doi: 10.1016/S0969-8043(01)00177-4
2002ZI01 Appl.Radiat.Isot. 56, 315 (2002) B.E.Zimmerman, J.T.Cessna, M.P.Unterweger The Standardization of 188W/188Re by 4πβ Liquid Scintillation Spectrometry with the CIEMAT/NIST 3H-Standard Efficiency Tracing Method RADIOACTIVITY 188W, 188Re(β-); measured Eγ, Iγ, βγ-coin; deduced source standardization. Liquid scintillation counting with efficiency tracing method.
doi: 10.1016/S0969-8043(01)00207-X
2001ZI01 Appl.Radiat.Isot. 54, 623 (2001) B.E.Zimmerman, M.P.Unterweger, J.W.Brodack The Standardization of 177Lu by 4πβ Liquid Scintillation Spectrometry with 3H-Standard Efficiency Tracing RADIOACTIVITY 177Lu(β-); measured T1/2. Efficiency tracing, standardization.
doi: 10.1016/S0969-8043(00)00316-X
2000LU17 J.Res.Natl.Inst.Stand.Technol. 105, 541 (2000) Comprehensive Review and Critical Evaluation of the Half-Life of Tritium RADIOACTIVITY 3H(β-); compiled, evaluated T1/2.
doi: 10.6028/jres.105.043
2000UN02 Appl.Radiat.Isot. 52, 527 (2000) Calibration of the National Institute of Standards and Technology tritiated-water standards RADIOACTIVITY 3H(β-); measured decay products; deduced T1/2. Comparison with the ENSDF data. NBS/NIST tritiated water SRMs.
doi: 10.1016/s0969-8043(99)00205-5
1997ZI06 J.Phys.(London) G23, 1707 (1997) B.E.Zimmerman, M.P.Unterweger, J.T.Cessna The Half-Life of 62Cu RADIOACTIVITY 62Cu(β+); measured T1/2. 4π liquid scintillator, ionization chamber.
doi: 10.1088/0954-3899/23/11/018
1996BE48 Nucl.Instrum.Methods Phys.Res. A369, 684 (1996) M.J.Berger, M.P.Unterweger, J.M.R.Hutchinson The Influence of Backing and Covering Materials on the 2π-Counting Efficiencies of Beta-Particle Source RADIOACTIVITY 90Sr(β-); 90Y(β-) [from 90Sr(β--decay)]; 36Cl(β-), (EC), (β+); 204Tl(β-), (EC); 137Cs(β-); 60Co(β-); 99Tc(β-); 147Pm(β-); 14C(β-); 28Al(β-); measured 2π-β counting rates; calculated 2π-β counting rates, Eβ, Iβ(θ). Monte Carlo techniques.
doi: 10.1016/S0168-9002(96)80076-3
1994CO02 Nucl.Instrum.Methods Phys.Res. A339, 26 (1994) B.M.Coursey, J.M.Calhoun, J.Cessna, D.B.Golas, F.J.Schima, M.P.Unterweger Liquid-Scintillation Counting Techniques for the Standardization of Radionuclides used in Therapy RADIOACTIVITY 109Pd(β-); 114mIn(EC); 123I(EC); 153Gd(EC); 153Sm(β-); 154Eu(EC), (β-); 155Eu(β-); 166Ho(β-); 169Yb(EC); 186Re(EC), (β-); 188Re(β-); measured γ emission rates; deduced deviations from previous data. 32P, 153Sm, 166Ho, 186,188Re(β-) measured T1/2. Liquid scintillation counting, radionuclides standardization for therapy.
doi: 10.1016/0168-9002(94)91773-6
1994MA51 Nucl.Instrum.Methods Phys.Res. A339, 343 (1994) J.L.Makepeace, F.E.Clark, J.L.Picolo, N.Coursol, E.Gunther, M.P.Unterweger Intercomparison of Internal Proportional Gas Counting of 85Kr and 3H COMPILATION 3H(β-); 85Kr(β-); compiled, reviewed data; deduced internal proportional gas counting international intercomparison.
doi: 10.1016/0168-9002(94)91829-5
1992UN01 Nucl.Instrum.Methods Phys.Res. A312, 349 (1992) M.P.Unterweger, D.D.Hoppes, F.J.Schima New and Revised Half-Life Measurements Results RADIOACTIVITY 60Co(β-); 137Cs(β-); 85Kr(β-); 22Na(β+), 133Ba(EC); 207Bi(EC), (β+); 125Sb(β-); 152Eu(EC)(β+); 154Eu(EC), (β-), (β-), (β+); 155Eu(β-); measured T1/2; deduced revised T1/2. Comparison with recommended values.
doi: 10.1016/0168-9002(92)90180-C
1991CO17 Appl.Radiat.Isot. 42, 865 (1991) B.M.Coursey, J.Cessna, E.Garcia-Torano, D.B.Golas, A.Grau Malonda, D.H.Gray, D.D.Hoppes, J.M.Los Arcos, M.T.Martin-Casallo, F.J.Schima, M.P.Unterweger The Standardization and Decay Scheme of Rhenium-186 RADIOACTIVITY 186Re(β-), (EC) [from reactor irradiation of 185Re]; measured T1/2, photon emission rates; deduced source standardization. 186Os transition deduced γ-emission probability. Pressurized ionization chamber.
doi: 10.1016/0883-2889(91)90226-Q
1987CO04 Appl.Radiat.Isot. 38, 31 (1987) B.M.Coursey, D.D.Hoppes, F.J.Schima, M.P.Unterweger The Standardization of Samarium-153 RADIOACTIVITY 153Sm(β-); measured T1/2, probability per decay for 103.2 keV γ-ray. 4π β liquid scintillation counter.
doi: 10.1016/0883-2889(87)90232-2
1983CO20 Int.J.Appl.Radiat.Isotop. 34, 1181 (1983) B.M.Coursey, D.D.Hoppes, M.P.Unterweger, A.Grau Malonda, R.A.Margolin, R.M.Kessler, R.Manning Standardization of 18F for Use in Positron-Emission Tomography RADIOACTIVITY 18F(β+), (EC) [from 20Ne(d, α), E=22 MeV]; measured β+ emission rates. 4π β liquid scintillator, 4π γ ionization chamber, source standardization, 22Na calibration.
doi: 10.1016/0020-708X(83)90186-2
1980UN01 Appl.Radiat.Isot. 31, 611 (1980) M.P.Unterweger, B.M.Coursey, F.J.Schima, W.B.Mann Preparation and Calibration of the 1978 National Bureau of Standards Tritiated-Water Standards
doi: 10.1016/0020-708X(80)90017-4
1974CA27 Phys.Rev. C10, 2631 (1974) L.M.Cavallo, F.J.Schima, M.P.Unterweger Decay of 133Xe-g RADIOACTIVITY 133gXe; measured T1/2, γ relative intensity. Enriched source, 4πγ pressure chamber, Ge(Li) detector.
doi: 10.1103/PhysRevC.10.2631
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