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NSR database version of April 27, 2024.

Search: Author = R.Poledna

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2021SI11      Appl.Radiat.Isot. 170, 109559 (2021)

R.F.P.Simoes, C.J.da Silva, R.L.da Silva, L.V.de Sa, R.Poledna, A.E.de Oliveira, A.Iwahara, P.A.L.da Cruz, J.U.Delgado

Standardization of ²²³Ra by live-time anticoincidence counting and gamma-ray emission determination

RADIOACTIVITY ²²³Ra(α); measured activity concentrations by 4πβαγ live-time anticoincidence counting (LTAC) method, Eγ, Iγ, E(x ray), I(x ray) using ionization chambers, scintillation detectors, and HPGe detector at LNMRI lab in Rio de Janeiro; deduced activity standardization of ²²³Ra source, emission probabilities of x rays and γ rays. Comparison with evaluated data by DDEP-LNHB.

doi: 10.1016/j.apradiso.2020.109559
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Data from this article have been entered in the XUNDL database. For more information, click here.

2017DA31      Appl.Radiat.Isot. 122, 37 (2017)

C.J.da Silva, E.A.Rezende, R.Poledna, L.Tauhata, A.Iwahara, R.T.Lopes

Standardization of ¹⁰⁶Ru/Rh by live-timed anticoincidence counting and gamma emission determination

RADIOACTIVITY ¹⁰⁶Ru(β^-); measured decay products, Eγ, Iγ; deduced γ-ray energies and intensities, standartization by anticoincidence method. Comparison with available data.

doi: 10.1016/j.apradiso.2017.01.007
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2012RE25      Appl.Radiat.Isot. 70, 2081 (2012)

E.A.Rezende, A.R.Correia, A.Iwahara, C.J.da Silva, L.Tauhata, R.Poledna, R.L.da Silva, E.M.de Oliveira, A.E.de Oliveira

Radioactivity measurements of ¹⁷⁷Lu, ¹¹¹In and ¹²³I by different absolute methods

RADIOACTIVITY ¹¹¹In, ¹²³I(EC); ¹⁷⁷Lu(β^-); measured Eγ, Iγ, Eβ, Iβ, absolute activities by 4πβγ coincidence method, half-lives. Comparison with previous measurements.

doi: 10.1016/j.apradiso.2012.02.067
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2010BE18      Appl.Radiat.Isot. 68, 2026 (2010)

M.-M.Be, B.Chauvenet, M.-N.Amiot, C.Bobin, M.-C.Lepy, T.Branger, I.Laniece, A.Luca, M.Sahagia, A.C.Watjen, K.Kossert, O.Ott, O.Nahle, P.Dryak, J.Sochorova, P.Kovar, P.Auerbach, T.Altzitzoglou, S.Pomme, G.Sibbens, R.Van Ammel, J.Paepen, A.Iwahara, J.U.Delgado, R.Poledna

International exercise on ¹²⁴Sb photon emission intensities determination

RADIOACTIVITY ¹²⁴Sb(β^-); measured Eγ, Iγ; deduced γ-ray and x-rays intensities per decay, branching ratio.

doi: 10.1016/j.apradiso.2010.01.038
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2009IW01      Nucl.Instrum.Methods Phys.Res. A602, 450 (2009)

A.Iwahara, J.U.Delgado, R.Poledna, C.J.da Silva, M.C.M.de Almeida, R.L.da Silva

Primary radioactivity standardization and gamma intensities determination of ¹²⁴Sb

RADIOACTIVITY ¹²⁴Sb(β^-); measured Eγ, Iγ, βγ-coin.

doi: 10.1016/j.nima.2009.01.021
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2006DA20      Appl.Radiat.Isot. 64, 1440 (2006)

M.A.L.da Silva, R.Poledna, A.Iwahara, C.J.da Silva, J.U.Delgado, R.T.Lopes

Standardization and decay data determinations of ¹²⁵I, ⁵⁴Mn and ²⁰³Hg

RADIOACTIVITY ⁵⁴Mn, ¹²⁵I, ²⁰³Hg; measured Eγ, Iγ; deduced photon emission probabilities.

doi: 10.1016/j.apradiso.2006.02.058
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2004DE02      Appl.Radiat.Isot. 60, 307 (2004)

K.C.de Souza, M.L.da Silva, J.U.Delgado, R.Poledna, R.T.Lopes, C.J.da Silva

Measurements of nuclear data parameters of ²⁰¹Tl by gamma-ray spectrometry

RADIOACTIVITY ²⁰¹Tl(EC); measured Eγ, Iγ, T_1/2; deduced emission probabilities.

doi: 10.1016/j.apradiso.2003.11.033
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2002BE04      Appl.Radiat.Isot. 56, 157 (2002)

E.M.O.Bernardes, J.U.Delgado, L.Tauhata, C.J.da Silva, A.Iwahara, R.Poledna, A.S.Paschoa

^166mHo: A multi-γ standard for the calibration of Ge spectrometers

RADIOACTIVITY ^166mHo(β^-); measured Eγ, Iγ, X-ray spectra, βγ-coin; deduced photon emission probabilities. ¹⁶⁶Er deduced transition intensities. Application to detector calibration discussed.

doi: 10.1016/S0969-8043(01)00182-8
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2002DA01      Appl.Radiat.Isot. 56, 169 (2002)

C.J.da Silva, J.U.Delgado, A.Iwahara, L.Tauhata, R.Poledna, R.N.Alves

Absolute Determination of Activity per Mass and Half-Life Measurements of ¹⁵²Eu

RADIOACTIVITY ¹⁵²Eu(β^-), (EC); measured Eγ, Iγ, βγ-coin, T_1/2; deduced source activity.

doi: 10.1016/S0969-8043(01)00184-1
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2001DE06      Appl.Radiat.Isot. 54, 483 (2001)

J.U.Delgado, A.Iwahara, R.Poledna, C.J.Da Silva, R.T.Lopes, L.Tauhata

Absolute Measurements of Photon Emission Probabilities of ¹⁶⁹Yb

RADIOACTIVITY ¹⁶⁹Yb(EC); measured Eγ, Iγ, (EC)γ-coin, T_1/2; deduced photon emission probabilities.

doi: 10.1016/S0969-8043(00)00294-3
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2000IW06      Nucl.Instrum.Methods Phys.Res. A455, 607 (2000)

A.Iwahara, J.U.Delgado, R.Poledna, C.J.da Silva, R.T.Lopes

Absolute Measurements of γ-Ray Emission Probabilities of ¹⁶⁹Yb

RADIOACTIVITY ¹⁶⁹Yb(EC); measured Eγ, Iγ, (X-ray)γ-coin; deduced γ-ray and X-ray emission probabilities.

doi: 10.1016/S0168-9002(00)00526-X
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1994IW04      Nucl.Instrum.Methods Phys.Res. A339, 381 (1994)

A.Iwahara, I.P.A.Salati, R.Poledna, C.J.da Silva, L.Tauhata

Influence from Delayed Events on the Activity Determination of ⁷⁵Se by the Coincidence Counting Method

RADIOACTIVITY ⁷⁵Se(EC); measured γ(X-ray)-, βγ-coin; deduced source solution activity concentration. 4π βγ-coincidence counting system with 4π gas flow proportional counter coupled to large NaI(Tl) detector.

doi: 10.1016/0168-9002(94)91835-X
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1990IW04      Nucl.Instrum.Methods Phys.Res. A286, 370 (1990)

A.Iwahara, M.H.H.Marechal, C.J.Da Silva, R.Poledna

Determination of the Activity Concentration of a ¹²⁵I Solution by X-(X, γ) Coincidence Counting and an Efficiency Extrapolation Curve

RADIOACTIVITY ¹²⁵I(EC); measured γ-spectra, (X-ray)γ-coin; deduced disintegration rate. ¹²⁵Te level deduced emission probability. Efficiency extrapolation curve, activity concentration determination.

doi: 10.1016/0168-9002(90)90880-F
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