NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = N.Severijns Found 116 matches. Showing 1 to 100. [Next]2023AD02 Eur.Phys.J. A 59, 15 (2023) A.Adamczak, A.Antognini, N.Berger, T.E.Cocolios, N.Deokar, Ch.E.Dullmann, A.Eggenberger, R.Eichler, M.Heines, H.Hess, P.Indelicato, K.Kirch, A.Knecht, J.J.Krauth, J.Nuber, A.Ouf, A.Papa, R.Pohl, E.Rapisarda, P.Reiter, N.Ritjoho, S.Roccia, M.Seidlitz, N.Severijns, K.von Schoeler, A.Skawran, S.M.Vogiatzi, N.Warr and F.Wauters Muonic atom spectroscopy with microgram target material
doi: 10.1140/epja/s10050-023-00930-y
2023FA07 Eur.Phys.J. A 59, 113 (2023) A.Falkowski, M.Gonzalez-Alonso, O.Naviliat-Cuncic, N.Severijns Superallowed decays within and beyond the standard model
doi: 10.1140/epja/s10050-023-01030-7
2023SE01 Phys.Rev. C 107, 015502 (2023) N.Severijns, L.Hayen, V.De Leebeeck, S.Vanlangendonck, K.Bodek, D.Rozpedzik, I.S.Towner Ft values of the mirror β transitions and the weak-magnetism-induced current in allowed nuclear β decay RADIOACTIVITY 1n, 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39Ca, 41Sc, 43Ti, 45V, 47Cr, 49Mn, 51Fe, 53Co, 55Ni, 57Cu, 59Zn, 61Ga, 63Ge, 65As, 67Se, 69Br, 71Kr, 73Rb, 75Sr, 77Y, 79Zr, 81Nb, 83Mo, 85Tc, 89Rh, 91Pd, 93Ag, 95Cd, 97In, 99Sn(EC), (β+); analyzed and evaluated measured half-lives for decays of all the listed nuclei, and ground-state branching ratios for decays of 1n to 75Sr, T=1/2 mirror β decays; deduced adopted T1/2, ground-state branching ratios for decays of 1n to 83Mo, except 69Br, 73Rb and 81Nb. 1n, 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39Ca, 41Sc, 43Ti, 45V, 47Cr, 49Mn, 51Fe, 53Co, 55Ni, 57Cu, 59Zn, 61Ga, 67Se, 71Kr, 75Sr(EC), (β+); calculated quantities and relevant corrections leading to the Ft values for mirror β transitions, and compared with available experimental values; comparison of experimental and theoretical values for the Gamow-Teller matrix element (MGT) and the orbital current matrix element (ML) for mirror β transitions from 1n to 45V decays. 6He, 9Li, 12,13B, 14,15C, 16N, 19O, 20F, 23Ne, 24,24mNa, 28Al, 32Si(β-); 9,10C, 12N, 13,14O, 18F, 18Ne, 20,22Na, 22Mg, 24,24mAl, 26Si, 28,30P, 30S, 32Cl, 34Ar, 36K, 38Ca, 42Ti, 53Ni(EC), (β+); analyzed logft values and other data for β transitions for T=1, 3/2 and 2 multiplet states for radiative corrections; comparison of the experimental values for the MGT and ML, and the form factors with the theoretical values calculated using shell model. 1n, 3H, 6He, 8,9Li, 12B, 16N, 20F, 23,24Ne, 24,24mNa(β-); 8Be, 9,10,11C, 12,13N, 15O, 17,18F, 18,19Ne, 20,21Na, 23Mg, 24,24m,25Al, 27Si, 29,30P, 30,31S, 33Cl, 35Ar, 36,37K, 39Ca(EC), (β+); analyzed overview of values of experimental form factors for all ground-state to ground-state and ground-state to first-excited 2+ or 4+ state T=1 and 3/2 transitions with A<39, and comparison with theoretical shell model calculations. 6He, 9Li, 12,13B, 14,15C, 16N, 19O, 20F, 23Ne, 24,24mNa, 28Al, 32Si(β-); 9,10C, 12N, 13,14O, 18Ne, 18F, 20,22Na, 22Mg, 24,24mAl, 26Si, 28,30P, 30S, 32Cl, 34Ar, 36K, 38Ca, 42Ti, 53Ni(β+); analyzed decay schemes for T=1 and T=3/2 mirror β transitions. Update of the Ft values of the isospin T=1/2 mirror β decays determine the Vud quark-mixing matrix element, taking into account recoil terms, weak magnetism, for the mirror β decays and a large set of β decays in higher isospin multiplets. Relevance to reactor neutrino problem and reactor neutrino anomaly. NUCLEAR MOMENTS 1n, 1,3H, 3He, 11,13C, 11B, 13,15N, 15,17O, 17,19F, 19,21Ne, 21,23Na, 23,25Mg, 25,27Al, 27,29Si, 29,31P, 31,33S, 33,35Cl, 35,37Ar, 37,39K, 39,41Ca, 41,43Sc, 43,45Ti, 45,47V, 47,49Cr, 49,51Mn, 51,53Fe, 53,55Co, 55,57Ni, 57,59Cu, 59,61Zn, 61,63Ga, 67As, 67Se, 71Br, 71Kr, 75Rb, 75,77Sr; analyzed and evaluated measured magnetic dipole moments of T=1/2 mirror nuclei; deduced adopted values, and calculated magnetic moments for which no experimental data available; deduced conserved vector current (CVC) form factors, and compared with theoretical shell-model calculations.
doi: 10.1103/PhysRevC.107.015502
2022VA06 Phys.Rev. C 106, 015506 (2022) S.Vanlangendonck, N.Severijns, L.Hayen, F.Gluck Influence of the recoil-order and radiative correction on the β decay correlation coefficients in mirror decays RADIOACTIVITY 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39K, 39Ca, 41Sc, 43Ti, 45V(EC), (β+); compiled J, π, T1/2 of parent activities, Gamow-Teller to Fermi mixing ratios, previous, ongoing, and proposed measurements of β correlation coefficients for the mirror beta decays; analyzed dominant standard model correction terms for the recoil-order and the radiative correction in measurements of β-asymmetry parameter and βν(θ); calculated and evaluated recoil-order correction using Holstein formalism with the impulse approximation, semianalytical radiative corrections. Relevance to the planning of future experiments for determination of the β decay correlation coefficients which can provide bounds on the existence of exotic current, and possible existence of right-handed neutrinos.
doi: 10.1103/PhysRevC.106.015506
2020AB02 Phys.Rev.Lett. 124, 081803 (2020) C.Abel, S.Afach, N.J.Ayres, C.A.Baker, G.Ban, G.Bison, K.Bodek, V.Bondar, M.Burghoff, E.Chanel, Z.Chowdhuri, P.-J.Chiu, B.Clement, C.B.Crawford, M.Daum, S.Emmenegger, L.Ferraris-Bouchez, M.Fertl, P.Flaux, B.Franke, A.Fratangelo, P.Geltenbort, K.Green, W.C.Griffith, M.van der Grinten, Z.D.Grujic, P.G.Harris, L.Hayen, W.Heil, R.Henneck, V.Helaine, N.Hild, Z.Hodge, M.Horras, P.Iaydjiev, S.N.Ivanov, M.Kasprzak, Y.Kermaidic, K.Kirch, A.Knecht, P.Knowles, H.-C.Koch, P.A.Koss, S.Komposch, A.Kozela, A.Kraft, J.Krempel, M.Kuzniak, B.Lauss, T.Lefort, Y.Lemiere, A.Leredde, P.Mohanmurthy, A.Mtchedlishvili, M.Musgrave, O.Naviliat-Cuncic, D.Pais, F.M.Piegsa, E.Pierre, G.Pignol, C.Plonka-Spehr, P.N.Prashanth, G.Quemener, M.Rawlik, D.Rebreyend, I.Rienacker, D.Ries, S.Roccia, G.Rogel, D.Rozpedzik, A.Schnabel, P.Schmidt-Wellenburg, N.Severijns, D.Shiers, R.Tavakoli Dinani, J.A.Thorne, R.Virot, J.Voigt, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, J.Zenner, G.Zsigmond Measurement of the Permanent Electric Dipole Moment of the Neutron NUCLEAR MOMENTS 1NN; measured frequencies; deduced the electric dipole moment (EDM) of the neutron or its upper limit.
doi: 10.1103/PhysRevLett.124.081803
2020AN04 Phys.Rev. C 101, 054313 (2020) A.Antognini, N.Berger, T.E.Cocolios, R.Dressler, R.Eichler, A.Eggenberger, P.Indelicato, K.Jungmann, C.H.Keitel, K.Kirch, A.Knecht, N.Michel, J.Nuber, N.S.Oreshkina, A.Ouf, A.Papa, R.Pohl, M.Pospelov, E.Rapisarda, N.Ritjoho, S.Roccia, N.Severijns, A.Skawran, S.M.Vogiatzi, F.Wauters, L.Willmann Measurement of the quadrupole moment of 185Re and 187Re from the hyperfine structure of muonic X rays ATOMIC PHYSICS 185,187Re, 208Pb(μ-, μ-'), E at 29 MeV/c, [negative muon beam from the decay of pions produced in C(p, π), E=590 MeV]; measured Eγ, Iγ, energy and intensities of muonic x-rays using two HPGe detectors at the HIPA facility of Paul Scherrer Institut; deduced hyperfine splitting of the 5g to 4f muonic atom transitions, and compared to state-of-the-art atomic theoretical predictions; extracted spectroscopic quadrupole moments for ground states of 185Re and 187Re. NUCLEAR MOMENTS 185,187Re; measured muonic atom hyperfine structure; deduced spectroscopic quadrupole moments of ground states. Comparison with previous experimental measurement using natural Re target, and with theoretical predictions.
doi: 10.1103/PhysRevC.101.054313
2020AR04 Phys.Rev. C 101, 055501 (2020) V.Araujo-Escalona, D.Atanasov, X.Flechard, P.Alfaurt, P.Ascher, B.Blank, L.Daudin, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian-Nieto, E.Lienard, G.Quemener, N.Severijns, S.Vanlangendonck, M.Versteegen, D.Zakoucky Simultaneous measurements of the β-neutrino angular correlation in 32Ar pure Fermi and pure Gamow-Teller transitions using β-proton coincidences RADIOACTIVITY 32Ar(β+), (β+p)[from Ca(p, X), E=1.4 GeV]; measured Eβ+, Iβ+, Ep, Ip, pβ+-coin using plastic scintillator for β+ detection and silicon detectors for proton detection at ISOLDE-CERN facility; deduced β-neutrino angular correlation coefficients for Fermi and Gamow-Teller transitions. Comparison with theoretical predictions of Standard model. Relevance to constraints on exotic weak interactions, and future WISArD (weak-interaction studies with 32Ar decay) research at CERN.
doi: 10.1103/PhysRevC.101.055501
2019AB02 Phys.Rev. A 99, 042112 (2019) C.Abel, N.J.Ayres, T.Baker, G.Ban, G.Bison, K.Bodek, V.Bondar, C.B.Crawford, P.-J.Chiu, E.Chanel, Z.Chowdhuri, M.Daum, B.Dechenaux, S.Emmenegger, L.Ferraris-Bouchez, P.Flaux, P.Geltenbort, K.Green, W.C.Griffith, M.van der Grinten, P.G.Harris, R.Henneck, N.Hild, P.Iaydjiev, S.N.Ivanov, M.Kasprzak, Y.Kermaidic, K.Kirch, H.-C.Koch, S.Komposch, P.A.Koss, A.Kozela, J.Krempel, B.Lauss, T.Lefort, Y.Lemiere, A.Leredde, P.Mohanmurthy, D.Pais, F.M.Piegsa, G.Pignol, G.Quemener, M.Rawlik, D.Rebreyend, D.Ries, S.Roccia, D.Rozpedzik, P.Schmidt-Wellenburg, A.Schnabel, N.Severijns, R.Virot, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, G.Zsigmond Magnetic-field uniformity in neutron electric-dipole-moment experiments
doi: 10.1103/PhysRevA.99.042112
2019BR14 Hyperfine Interactions 240, 1 (2019) L.J.Broussard, S.Baessler, T.L.Bailey, N.Birge, J.D.Bowman, C.B.Crawford, C.Cude-Woods, D.E.Fellers, N.Fomin, E.Frlez, M.T.W.Gericke, L.Hayen, A.P.Jezghani, H.Li, N.Macsai, M.F.Makela, R.R.Mammei, D.Mathews, P.L.McGaughey, P.E.Mueller, D.Pocanic, C.A.Royse, A.Salas-Bacci, S.K.L.Sjue, J.C.Ramsey, N.Severijns, E.C.Smith, J.Wexler, R.A.Whitehead, A.R.Young, B.A.Zeck Using Nab to determine correlations in unpolarized neutron decay RADIOACTIVITY 45Ca(β-); measured decay products, Eβ, Iβ; deduced sensitivity for the ratio of the weak axial-vector and vector coupling constants.
doi: 10.1007/s10751-018-1538-7
2019GO01 Prog.Part.Nucl.Phys. 104, 165 (2019) M.Gonzalez-Alonso, O.Naviliat-Cuncic, N.Severijns New physics searches in nuclear and neutron β decay
doi: 10.1016/j.ppnp.2018.08.002
2019HA13 Phys.Rev. C 99, 031301 (2019) L.Hayen, J.Kostensalo, N.Severijns, J.Suhonen First-forbidden transitions in reactor antineutrino spectra RADIOACTIVITY 87Se, 86,89Br, 88,90,92,93,95Rb, 91Kr, 94,96,97,98Y, 95Sr, 133Sn, 135Te, 136m,137,138I, 140,142Cs, 87Se, 134mSb, 139Xe(β-)[from 235U(n, F), E=thermal]; calculated shape factors versus electron kinetic energy of dominant first-forbidden transitions above 4 MeV in the electron and antineutrino spectra of fission actinides, changes in the predicted electron and antineutrino spectra of the considered transitions compared to the allowed approximation with an optional weak magnetism correction, summed 235U electron spectrum using the fission yields from the ENDF database, and normalized spectral ratios for three experiments (Daya Bay, Reno and Double Chooz) relative to the Huber-Mueller predictions using the ENDF and ENSDF databases. Microscopic calculations using shell model approach.
doi: 10.1103/PhysRevC.99.031301
2019HA30 Phys.Rev. C 100, 054323 (2019) L.Hayen, J.Kostensalo, N.Severijns, J.Suhonen First-forbidden transitions in the reactor anomaly RADIOACTIVITY 86,89Br, 87Se, 88,90,92,93,95Rb, 91Kr, 94,96,97,98Y, 95Sr, 133Sn, 135,136Te, 134m,135Sb, 136m,137,138I, 140,142,143Cs, 139,140Xe(β-); calculated shape factors for first-forbidden non-unique β transitions using shell model, and compared with those for allowed shapes, and with data in literature, β spectra and comparison to the measured cumulative spectra measured at ILL-Grenoble for 235U; deduced uncertainty in the relative change in the prediction of the electron (antineutrino) spectra when using forbidden spectral shapes instead of simple allowed shapes, forbidden flux coverage; parametrized forbidden shape factors using Monte Carlo simulations. 235,238U, 239,241Pu; updated summation calculations, relative change in the cumulative electron and antineutrino spectra when treating the β transitions for listed isotopes as allowed and forbidden, integrated flux and inverse β decay (IBD) rate change due to the inclusion of forbidden transition shape factors, comparison of the expected spectrum change due to forbidden transitions for the different reactors: Daya Bay, RENO and Double Chooz.
doi: 10.1103/PhysRevC.100.054323
2019KA30 Phys.Rev. C 100, 015502 (2019);Erratum Phys. Rev. C 101, 049901 (2020) J.Karthein, D.Atanasov, K.Blaum, M.Breitenfeldt, V.Bondar, S.George, L.Hayen, D.Lunney, V.Manea, M.Mougeot, D.Neidherr, L.Schweikhard, N.Severijns, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber QEC-value determination for 21Na → 21Ne and 23Mg → 23Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at the CERN ISOLDE facility ATOMIC MASSES 21Na, 23Mg; measured time-of-flight spectrum using laser ionization, Ramsey-type ion-cyclotron resonances, cyclotron frequency ratios using ISOLTRAP at ISOLDE-CERN facility; deduced Q(ϵ) values. Comparison with previous measurements. RADIOACTIVITY 21Na, 23Mg(EC)[from SiC(p, X), E=1.4 GeV from CERN Proton-Synchrotron booster, followed by magnetic mass separation using the general-purpose separator (GPS), laser ion source VADLIS, and ISOLDE resonant ionization laser ion source RILIS]; deduced Q(ϵ) from measured mass excesses, logft, up-down Vud element of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Comparison between Vud values for mirror-nuclei: 19Ne, 29P, 35Ar, 37K and 21Na.
doi: 10.1103/PhysRevC.100.015502
2018FA02 Phys.Rev. A 97, 023402 (2018) X.Fabian, X.Flechard, B.Pons, E.Lienard, G.Ban, M.Breitenfeldt, C.Couratin, P.Delahaye, D.Durand, P.Finlay, B.Guillon, Y.Lemiere, F.Mauger, A.Mery, O.Naviliat-Cuncic, T.Porobic, G.Quemener, N.Severijns, J.-C.Thomas Electron shakeoff following the β+ decay of 19Ne+ and 35Ar+ trapped ions RADIOACTIVITY 19Ne, 35Ar(β+) [from C(20Ne, X)19Ne, E=95 MeV/nucleon]; measured decay products, time of flight, Eβ, Iβ; deduced ion charge-state branching ratios, one-electron ionization probabilities, charge-state branching ratios with and without recoil and Auger ionizations. Comparison with theoretical calculations.
doi: 10.1103/PhysRevA.97.023402
2018HA13 Rev.Mod.Phys. 90, 015008 (2018) L.Hayen, N.Severijns, K.Bodek, D.Rozpedzik, X.Mougeot High precision analytical description of the allowed β spectrum shape NUCLEAR STRUCTURE 14C, 14N, 25Na, 25Mg, 35S, 35Cl, 45Ca, 45Sc, 61Cr, 61Mn, 64Co, 64Ni, 100Nb, 100Mo, 104Nb, 104Mo, 121Sn, 121Sb; calculated weak charge radii. Comparison with available data.
doi: 10.1103/RevModPhys.90.015008
2018PE08 Acta Phys.Pol. B49, 261 (2018) M.Perkowski, K.Bodek, L.De Keukeleere, L.Hayen, A.Kozela, K.Lojek, D.Rozpedzik, N.Severijns Initial Tests of MiniBETA Spectrometer Performance
doi: 10.5506/aphyspolb.49.261
2017FI07 Phys.Rev. C 96, 025501 (2017) P.Finlay, A.T.Laffoley, G.C.Ball, P.C.Bender, M.R.Dunlop, R.Dunlop, G.Hackman, J.R.Leslie, A.D.MacLean, D.Miller, M.Moukaddam, B.Olaizola, N.Severijns, J.K.Smith, D.Southall, C.E.Svensson High-precision half-life determination for 21Na using a 4π gas-proportional counter RADIOACTIVITY 21Na(β+)[from Ta(p, X), E=480 MeV at TRIUMF cyclotron]; measured Eγ, βγ-coin, β+ particles, precise half-life of 21Na decay using 4π continuous-flow gas proportional counter at TRIUMF-ISAC facility. detailed analysis of half-life data and systematic uncertainties. 21Na; deduced world-average half-life by combining present result with previous measurements, and discussed contribution to the uncertainty in the Ft value of the superallowed β+ transition between the isospin T=1/2 mirror nuclei 21Na and 21Ne.
doi: 10.1103/PhysRevC.96.025501
2017KO26 J.Phys.(London) G44, 084005 (2017) M.Kowalska, P.Aschenbrenner, M.Baranowski, M.L.Bissell, W.Gins, R.D.Harding, H.Heylen, G.Neyens, S.Pallada, N.Severijns, Ph.Velten, M.Walczak, F.Wienholtz, Z.Y.Xu, X.F.Yang, D.Zakoucky New laser polarization line at the ISOLDE facility NUCLEAR MOMENTS 26,28Na; measured longitudinal transitional field; deduced hyperfine structures of the D2 line, ratio of the nuclear spin polarization. Comparison with available data.
doi: 10.1088/1361-6471/aa77d7
2017SE09 J.Phys.(London) G44, 074002 (2017) Weak interaction physics at ISOLDE RADIOACTIVITY 38,39Ca, 37K, 10C(β+); measured decay products, Eγ, Iγ; deduced T1/2. ATOMIC MASSES 18Ne, 22Na, 22Mg, 26Al, 34Ar, 38ca, 74Rb; measured cyclotron frequencies using the time-of-flight ion-cyclotron-resonance technique with ISOLTRAP; deduced mass excess, Q-values.
doi: 10.1088/1361-6471/aa71e3
2016BA63 Eur.Phys.J. A 52, 326 (2016) G.Ban, G.Bison, K.Bodek, Z.Chowdhuri, P.Geltenbort, W.C.Griffith, V.Helaine, R.Henneck, M.Kasprzak, Y.Kermaidic, K.Kirch, S.Komposch, P.A.Koss, A.Kozela, J.Krempel, B.Lauss, T.Lefort, Y.Lemiere, A.Mtchedlishvili, M.Musgrave, O.Naviliat-Cuncic, F.M.Piegsa, E.Pierre, G.Pignol, G.Quemener, M.Rawlik, D.Ries, D.Rebreyend, S.Roccia, G.Rogel, P.Schmidt-Wellenburg, N.Severijns, E.Wursten, J.Zejma, G.Zsigmond Ultracold neutron detection with 6Li-doped glass scintillators
doi: 10.1140/epja/i2016-16326-4
2016FI09 Eur.Phys.J. A 52, 206 (2016) P.Finlay, M.Breitenfeldt, T.Porobic, E.Wursten, G.Ban, M.Beck, C.Couratin, X.Fabian, X.Flechard, P.Friedag, P.Friedag, F.Gluck, A.Herlert, A.Knecht, V.Y.Kozlov, E.Lienard, G.Soti, M.Tandecki, E.Traykov, S.Van Gorp, Ch.Weinheimer, D.Zakoucky, N.Severijns First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer
doi: 10.1140/epja/i2016-16206-y
2015AF03 Phys.Rev.Lett. 115, 162502 (2015) S.Afach, N.J.Ayres, G.Ban, G.Bison, K.Bodek, Z.Chowdhuri, M.Daum, M.Fertl, B.Franke, W.C.Griffith, Z.D.Grujic, P.G.Harris, W.Heil, V.Helaine, M.Kasprzak, Y.Kermaidic, K.Kirch, P.Knowles, H.-C.Koch, S.Komposch, A.Kozela, J.Krempel, B.Lauss, T.Lefort, Y.Lemiere, A.Mtchedlishvili, M.Musgrave, O.Naviliat-Cuncic, J.M.Pendlebury, F.M.Piegsa, G.Pignol, C.Plonka-Spehr, P.N.Prashanth, G.Quemener, M.Rawlik, D.Rebreyend, D.Ries, S.Roccia, D.Rozpedzik, P.Schmidt-Wellenburg, N.Severijns, J.A.Thorne, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, J.Zenner, G.Zsigmond Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy
doi: 10.1103/PhysRevLett.115.162502
2015AF05 Eur.Phys.J. A 51, 143 (2015) S.Afach, G.Ban, G.Bison, K.Bodek, Z.Chowdhuri, M.Daum, M.Fertl, B.Franke, P.Geltenbort, Z.D.Grujic, L.Hayen, V.Helaine, R.Henneck, M.Kasprzak, Y.Kermaidic, K.Kirch, S.Komposch, A.Kozela, J.Krempel, B.Lauss, T.Lefort, Y.Lemiere, A.Mtchedlishvili, O.Naviliat-Cuncic, F.M.Piegsa, G.Pignol, P.N.Prashanth, G.Quemener, M.Rawlik, D.Ries, D.Rebreyend, S.Roccia, D.Rozpedzik, P.Schmidt-Wellenburg, N.Severijns, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, G.Zsigmond A device for simultaneous spin analysis of ultracold neutrons
doi: 10.1140/epja/i2015-15143-7
2014SO16 Phys.Rev. C 90, 035502 (2014) G.Soti, F.Wauters, M.Breitenfeldt, P.Finlay, P.Herzog, A.Knecht, U.Koster, I.S.Kraev, T.Porobic, P.N.Prashanth, I.S.Towner, C.Tramm, D.Zakoucky, N.Severijns Measurement of the β-asymmetry parameter of 67Cu in search for tensor-type currents in the weak interaction RADIOACTIVITY 67,68,68mCu(β-)[from U(p, X), E=1.4 GeV, followed by fragment separation by RILIS and GPS at CERN-ISOLDE]; measured Eβ, Iβ, β(θ, H, temp) by using nuclear implantation into Cold On-Line Equipment (NICOLE) 3He-4He dilution refrigerator; deduced β-asymmetry parameter for 67Cu decay and constraints on tensor coupling constants, nuclear matrix elements. Technique of LTNO used in combination with GEANT4-based Monte Carlo simulations. Comparisons with previous experimental measurements, and with predictions of standard model.
doi: 10.1103/PhysRevC.90.035502
2014VA12 Phys.Rev. C 90, 025502 (2014) S.Van Gorp, M.Breitenfeldt, M.Tandecki, M.Beck, P.Finlay, P.Friedag, F.Gluck, A.Herlert, V.Kozlov, T.Porobic, G.Soti, E.Traykov, F.Wauters, Ch.Weinheimer, D.Zakoucky, N.Severijns First β-ν correlation measurement from the recoil-energy spectrum of Penning trapped 35Ar ions RADIOACTIVITY 35Ar(β+)[from Ca(p, X), E=1.4 GeV]; measured recoil (35Cl) ion energy spectrum, βν(θ) using REXTRAP, WITCH systems at ISOLDE-CERN facility; deduced beta-neutrino correlation coefficient 'a' and compared with predicted value from Standard model. SIMBUCA simulation. Search for exotic currents in weak interactions.
doi: 10.1103/PhysRevC.90.025502
2013CO25 Phys.Rev. A 88, 041403 (2013) C.Couratin, X.Fabian, B.Fabre, B.Pons, X.Flechard, E.Lienard, G.Ban, M.Breitenfeldt, P.Delahaye, D.Durand, A.Mery, O.Naviliat-Cuncic, T.Porobic, G.Quemener, D.Rodriguez, N.Severijns, J.-C.Thomas, S.Van Gorp Electron shakeoff following the Β+ decay of trapped 35Ar+ ions RADIOACTIVITY 35Ar(β+); measured decay products, nuclear recoil; deduced charge-state distribution of recoiling daughter. Comparison with shakeoff and Auger processes calculations.
doi: 10.1103/PhysRevA.88.041403
2013SE02 Phys.Scr. T152, 014018 (2013) N.Severijns, O.Naviliat-Cuncic Structure and symmetries of the weak interaction in nuclear beta decay
doi: 10.1088/0031-8949/2013/T152/014018
2012KO16 Phys.Rev. C 85, 045501 (2012) A.Kozela, G.Ban, A.Bialek, K.Bodek, P.Gorel, K.Kirch, St.Kistryn, O.Naviliat-Cuncic, N.Severijns, E.Stephan, J.Zejma Measurement of the transverse polarization of electrons emitted in free neutron decay RADIOACTIVITY 1n(β-); measured components of transverse polarization of electrons emitted in the β decay of polarized, free neutrons using Mott Scattering; deduced T-odd and P-odd correlation coefficient. Comparison with predictions of Standard model. Discussed implications for leptoquark exchange model and the minimal supersymmetric model with R-parity violation.
doi: 10.1103/PhysRevC.85.045501
2011BE16 Eur.Phys.J. A 47, 45 (2011) M.Beck, S.Coeck, V.Yu.Kozlov, M.Breitenfeldt, P.Delahaye, P.Friedag, F.Gluck, M.Herbane, A.Herlert, I.S.Kraev, J.Mader, M.Tandecki, S.Van Gorp, F.Wauters, Ch.Weinheimer, F.Wenander, N.Severijns, and the ISOLDE Collaboration First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment RADIOACTIVITY 124In(β-); measured decay products, recoil ions; deduced recoil energy spectrum. Penning trap measurements.
doi: 10.1140/epja/i2011-11045-0
2011GO17 Phys.Rev. C 84, 014323 (2011) V.V.Golovko, F.Wauters, S.Cottenier, M.Breitenfeldt, V.De Leebeeck, S.Roccia, G.Soti, M.Tandecki, E.Traykov, S.Van Gorp, D.Zakoucky, N.Severijns Hyperfine field and hyperfine anomalies of copper impurities in iron NUCLEAR MOMENTS 59,67,69,71Cu; analyzed magnetic moments obtained from laser spectroscopy and nuclear magnetic resonance frequencies from β-NMR experiments; deduced hyperfine anomalies, and hyperfine magnetic field of Cu in Fe host.
doi: 10.1103/PhysRevC.84.014323
2011KO09 Acta Phys.Pol. B42, 789 (2011) A.Kozela, G.Ban, A.Bialek, K.Bodek, P.Gorel, K.Kirch, St.Kistryn, M.Kuzniak, O.Naviliat-Cuncic, N.Severijns, E.Stephan, J.Zejma Free Neutron Decay and Time Reversal Violation RADIOACTIVITY 1n(β-); measured Ee, Ie; deduced bounds on scalar vs. tensor normalized couplings, T, P-correlation coefficients.
doi: 10.5506/APhysPolB.42.789
2010AL29 Nucl.Phys. A844, 47c (2010) I.Altarev, G.Ban, G.Bison, K.Bodek, M.Burghoff, Z.Chowdhuri, M.Daum, C.Dusing, M.Fertl, P.Fierlinger, B.Franke, C.Grab, E.Gutsmiedl, G.Hampel, W.Heil, R.Henneck, M.Horras, N.Khomutov, K.Kirch, S.Kistryn, S.Knappe-Gruneberg, A.Knecht, P.Knowles, A.Kozela, A.Kraft, F.Kuchler, J.V.Kratz, T.Lauer, B.Lauss, T.Lefort, Y.Lemiere, A.Mtchedlishvili, O.Naviliat-Cuncic, G.Quemener, S.Paul, A.S.Pazgalev, G.Petzoldt, C.Plonka-Spehr, E.Pierre, G.Pignol, D.Rebreyend, S.Roccia, G.Rogel, P.Schmidt-Wellenburg, A.Schnabel, N.Severijns, Yu.Sobolev, R.Stoepler, A.Weis, N.Wiehl, J.Zejma, J.Zenner, G.Zsigmond An improved measurement of the electric dipole moment of the neutron
doi: 10.1016/j.nuclphysa.2010.05.012
2010BO22 Eur.Phys.J. A 45, 159 (2010) I.N.Borzov, E.E.Saperstein, S.V.Tolokonnikov, G.Neyens, N.Severijns Description of magnetic moments of long isotopic chains within the FFS theory NUCLEAR STRUCTURE 57,59,61,63,65,67,69,71,73,75Cu, 111,113,115,117,119,121,123,125,127,129,131Sn, 133Sb, 135I, 137Cs, 139La, 141Pr, 143Pm, 145Eu, 147Tb, 183,185,187,189,191,193,195,199,201,203,207,209,211Pb; calculated μ for ground and excited states using self-consistent finite Fermi system theory with pairing and quasiparticle continuum. Comparison with data and other calculations.
doi: 10.1140/epja/i2010-10985-y
2010GO08 Phys.Rev. C 81, 054323 (2010) V.V.Golovko, I.S.Kraev, T.Phalet, B.Delaure, M.Beck, V.Yu.Kozlov, S.Coeck, F.Wauters, P.Herzog, Ch.Tramm, D.Zakoucky, D.Venos, D.Srnka, M.Honusek, U.Koster, N.Severijns Magnetic moment of 104Agm and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei NUCLEAR MOMENTS 104mAg; measured resonance frequencies and magnetic moment by nuclear magnetic resonance on oriented nuclei at ISOLDE/CERN. deduced hyperfine field of Ag impurities in Fe. β-NMR/ON method. Comparison with magnetic moments of 102,104,106,108,110Ag and shell model calculations. RADIOACTIVITY 104Ag(EC), (β+)[from 104Cd(EC), (β+) formed in Sn(p, X), E=1.4GeV]; measured Eγ, Iγ, Eβ, Iβ, γ(θ).
doi: 10.1103/PhysRevC.81.054323
2010WA40 Phys.Rev. C 82, 055502 (2010) F.Wauters, I.Kraev, D.Zakoucky, M.Beck, M.Breitenfeldt, V.De Leebeeck, V.V.Golovko, V.Yu.Kozlov, T.Phalet, S.Roccia, G.Soti, M.Tandecki, I.S.Towner, E.Traykov, S.Van Gorp, N.Severijns Precision measurements of the 60Co β-asymmetry parameter in search for tensor currents in weak interactions RADIOACTIVITY 60Co(β-); measured E(β), I(β), γ(θ), β asymmetry parameter using a polarized 60Co source with low-temperature nuclear orientation method. 57Co, 54Mn(EC); measured γ(θ) and used as references for temperature measurement. Systematics of β-asymmetry parameters for Gamow-Teller transitions and for T=1/2 mirror nuclei. Tensor currents in weak interactions.
doi: 10.1103/PhysRevC.82.055502
2010WA42 Phys.Rev. C 82, 064317 (2010) F.Wauters, B.Verstichel, M.Breitenfeldt, V.De Leebeeck, V.Yu.Kozlov, I.Kraev, S.Roccia, G.Soti, M.Tandecki, E.Traykov, S.Van Gorp, D.Zakoucky, N.Severijns Half-life of 221Fr in Si and Au at 4 K and at millikelvin temperatures RADIOACTIVITY 221Fr(α)[from U(p, X), E=1.4 GeV]; measured Eα, Iα, Eγ, Iγ parent half-life at 20 mK and 4 K in Si and Au host media. No dependency on the solid-state environment and temperature of this α decaying isotope is observed up to a level of 0.1%.
doi: 10.1103/PhysRevC.82.064317
2009BA56 Nucl.Phys. A827, 422c (2009) G.Ban, A.Bialek, K.Bodek, J.Bozek, P.Gorel, K.Kirch, St.Kistryn, A.Kozela, M.Kuzniak, O.Naviliat-Cuncic, N.Severijns, E.Stephan, J.Zejma Search for Exotic Couplings in Neutron Decay: A Measurement of the Transverse Polarization of Electrons
doi: 10.1016/j.nuclphysa.2009.05.090
2009KO11 Phys.Rev.Lett. 102, 172301 (2009) A.Kozela, G.Ban, A.Bialek, K.Bodek, P.Gorel, K.Kirch, St.Kistryn, M.Kuzniak, O.Naviliat-Cuncic, J.Pulut, N.Severijns, E.Stephan, J.Zejma Measurement of the Transverse Polarization of Electrons Emitted in Free-Neutron Decay RADIOACTIVITY 1n(β-); measured transverse polarization of electrons.
doi: 10.1103/PhysRevLett.102.172301
2009NA06 Phys.Rev.Lett. 102, 142302 (2009) O.Naviliat-Cuncic, N.Severijns Test of the Conserved Vector Current Hypothesis in T=1/2 Mirror Transitions and New Determination of (Vud)
doi: 10.1103/PhysRevLett.102.142302
2009NA42 Eur.Phys.J. A 42, 327 (2009) O.Naviliat-Cuncic, N.Severijns |Vud| from T = 1/2 mirror transitions and the role of atom and ion traps
doi: 10.1140/epja/i2009-10821-7
2009SE09 Phys.Rev. C 79, 064322 (2009) N.Severijns, A.A.Belyaev, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.V.Golovko, G.M.Gurevich, P.Herzog, I.S.Kraev, A.A.Lukhanin, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, M.Tandecki, Yu.G.Toporov, C.Tramm, E.Traykov, S.Van Gorp, V.N.Vyachin, F.Wauters, D.Zakoucky, E.Zotov Hyperfine field of einsteinium in iron and nuclear magnetic moment of 254Es NUCLEAR MOMENTS 254Es, 250Bk; measured magnetic dipole moment using low temperature nuclear orientation (LTNO) and hyperfine fields in an iron host-lattice. Comparison with deformed single-particle model calculations. RADIOACTIVITY 253,254Es, 255Fm(α); measured Eα, Iα, α(θ). 250Bk(β-); measured γ(θ).
doi: 10.1103/PhysRevC.79.064322
2009WA22 Phys.Rev. C 80, 062501 (2009) F.Wauters, V.De Leebeeck, I.Kraev, M.Tandecki, E.Traykov, S.Van Gorp, N.Severijns, D.Zakoucky β asymmetry parameter in the decay of 114In RADIOACTIVITY 114In(β-); measured β spectra, β(θ, T, H), and ce; using low-temperature nuclear orientation technique; deduced β-asymmetry parameter. Comparison with GEANT4-based simulation code and predictions of Standard model.
doi: 10.1103/PhysRevC.80.062501
2008GU05 Bull.Rus.Acad.Sci.Phys. 72, 315 (2008); Izv.Akad.Nauk RAS, Ser.Fiz. 72, 340 (2008) G.M.Gurevich, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.V.Golovko, P.Herzog, I.S.Kraev, A.A.Lukhanin, A.A.Belyaev, V.P.Parfenova, T.Phalet, A.V.Rusakov, N.Severijns, Yu.G.Toporov, C.Tramm, V.N.Vyachin, D.Zakoucky, E.Zotov The effect of metallic environment and low temperature on the 253Es α decay rate RADIOACTIVITY 253Es(α); measured Eα, Iα, Eγ, Iγ, half-life for source implanted in an Iron foil at low temperatures.
doi: 10.3103/s11954-008-3010-3
2008SE10 Phys.Rev. C 78, 055501 (2008) N.Severijns, M.Tandecki, T.Phalet, I.S.Towner Ft values of the T = 1/2 mirror β transitions RADIOACTIVITY 3H, 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39Ca, 41Sc, 43Ti, 45V, 47Cr, 49Mn, 51Fe, 53Co, 57Cu, 59Zn, 61Ga, 71Kr, 75Sr, 55Ni, 63Ge, 65As, 67Se, 77Y, 79Zr, 83Mo(EC), (β+); analyzed half-lives, branching ratios, electron-capture probabilities; deduced ft values, correlation coefficients.
doi: 10.1103/PhysRevC.78.055501
2008ZA01 Acta Phys.Pol. B39, 411 (2008) D.Zakoucky, J.R.Stone, G.Goldring, N.J.Stone, N.Severijns, M.Hass, T.Giles, U.Koester, I.S.Kraev, S.Lakshmi, M.Lindroos, F.Wauters Parity Non-Conservation Observed in Nuclear γ-Decay of 180mHf RADIOACTIVITY 180Hf(IT); measured Eγ, Iγ as a function of temperature and nuclear orientation. Deduced assymetry of the isomeric transition, parity mixing.
2007SE08 Phys.Rev. C 76, 024304 (2007) N.Severijns, A.A.Belyaev, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.V.Golovko, G.M.Gurevich, P.Herzog, I.S.Kraev, A.A.Lukhanin, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, Yu.G.Toporov, C.Tramm, V.N.Vyachin, F.Wauters, D.Zakoucky, E.Zotov α-decay half-life of 253Es in metallic Fe at temperatures between 4 K and 50 mK RADIOACTIVITY 253Es(α); measured T1/2 at low temperatures.
doi: 10.1103/PhysRevC.76.024304
2007ST20 Phys.Rev. C 76, 025502 (2007) J.R.Stone, G.Goldring, N.J.Stone, N.Severijns, M.Hass, D.Zakoucky, T.Giles, U.Koster, I.S.Kraev, S.Lakshmi, M.Lindroos, F.Wauters Confirmation of parity violation in the γ decay of 180Hfm RADIOACTIVITY 180Hf(IT); measured Eγ, Iγ, angular distributions and mixing ratio. Deduced presence of irregular E2 admixture in the isomeric transition.
doi: 10.1103/PhysRevC.76.025502
2006BA52 Nucl.Instrum.Methods Phys.Res. A565, 711 (2006) G.Ban, M.Beck, A.Bialek, K.Bodek, P.Gorel, K.Kirch, St.Kistryn, A.Kozela, M.Kuzniak, A.Lindroth, O.Naviliat-Cuncic, J.Pulut, N.Severijns, E.Stephan, J.Zejma A Mott polarimeter for the search of time reversal violation in the decay of free neutrons RADIOACTIVITY 1n(β-); measured electron polarization following decay of polarized cold neutrons.
doi: 10.1016/j.nima.2006.05.166
2006GO32 Phys.Rev. C 74, 044313 (2006) V.V.Golovko, I.S.Kraev, T.Phalet, N.Severijns, D.Venos, D.Zakoucky, P.Herzog, C.Tramm, U.Koster, D.Srnka, M.Honusek, B.Delaure, M.Beck, V.Yu.Kozlov, A.Lindroth Nuclear spin-lattice relaxation of 62Cu at low temperatures in iron NUCLEAR MOMENTS 62Cu; measured nuclear spin-lattice relaxation rate in iron.
doi: 10.1103/PhysRevC.74.044313
2006GU32 Bull.Rus.Acad.Sci.Phys. 70, 282 (2006) G.M.Gurevich, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.Golovko, P.Herzog, I.Kraev, A.A.Lukhanin, A.A.Belyaev, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, N.Severijns, Yu.G.Toporov, C.Tramm, V.N.Vyachin, D.Zakoucky, E.Zotov Angular anisotropy of α- and γ-emission in decay of oriented 254Es and its daughter 250Bk nucleus RADIOACTIVITY 254Es(α); 250Bk(β-); measured Eα, Eγ, angular distribution for decay from oriented sources.
2006KH04 JETP Lett. 83, 5 (2006); Erratum JETP Lett. 83, 366 (2006); Comment JETP Lett. 84, 231 (2006) R.U.Khafizov, N.Severijns, O.Zimmer, H.-F.Wirth, D.Rich, S.V.Tolokonnikov, V.A.Solovei, M.R.Kolhidashvili Observation of the Neutron Radiative Decay RADIOACTIVITY 1n(β-); measured βpγ-coin; deduced branching ratio for radiative decay. Note: In comment, several co-authors deny responsibility for article contents.
doi: 10.1134/S0021364006010024
2006KO63 Int.J. Mass Spectrom. 251, 159 (2006) V.Yu.Kozlov, N.Severijns, D.Beck, M.Beck, S.Coeck, B.Delaure, A.Lindroth, S.Kopecky, P.Delahaye, F.Wenander, V.V.Golovko, I.S.Kraev, T.Phalet, and the ISOLDE NIPNET and TRAPSPEC Collaborations The WITCH experiment: Completion of a set-up to investigate the structure of weak interactions with a Penning trap RADIOACTIVITY 26mAl, 38mK(β+); measured recoil energy spectrum in β decay, βν(θ). 20Ne, 23Na, 39K; measured excitation, and ion beam properties on the WITCH set-up. Penning trap method. 35Ar; measured half-life and time-of-flight spectrum.
doi: 10.1016/j.ijms.2006.01.050
2005BO35 J.Res.Natl.Inst.Stand.Technol. 110, 461 (2005) K.Bodek, G.Ban, M.Beck, A.Bialek, T.Brys, A.Czarnecki, W.Fetscher, P.Gorel, K.Kirch, St.Kistryn, A.Kozela, M.Kuzniak, A.Lindroth, O.Naviliat-Cuncic, J.Pulut, A.Serebrov, N.Severijns, E.Stephan, J.Zejma Search for Time Reversal Violating Effects: R-Correlation Measurement in Neutron Decay RADIOACTIVITY 1n(β-); measured Eβ. Plans for measurement of time-reversal violating effects discussed.
doi: 10.6028/jres.110.071
2005BY04 J.Res.Natl.Inst.Stand.Technol. 110, 415 (2005) J.Byrne, R.U.Khafizov, Yu A.Mostovoi, O.Rozhnov, V.A.Solovei, M.Beck, V.U.Kozlov, N.Severijns Search for Radiative β-Decay of the Free Neutron RADIOACTIVITY 1n(β-); measured Ep, Eβ, Eγ, pγ-, βγ-, pβ-coin; deduced upper limit for radiative decay branching ratio.
doi: 10.6028/jres.110.063
2005GO44 Phys.Rev. C 72, 064316 (2005) V.V.Golovko, I.S.Kraev, T.Phalet, N.Severijns, D.Zakoucky, D.Venos, P.Herzog, C.Tramm, D.Srnka, M.Honusek, U.Koster, B.Delaure, M.Beck, V.Yu.Kozlov, A.Lindroth, S.Coeck Nuclear magnetic moment of 69As from on-line β-NMR on oriented nuclei RADIOACTIVITY 69As(EC), (β+) [from Zr(p, X)]; measured Eβ, β-asymmetry, β-NMR spectrum from polarized source. 69As deduced μ.
doi: 10.1103/PhysRevC.72.064316
2005GU40 Bull.Rus.Acad.Sci.Phys. 69, 821 (2005) G.M.Gurevich, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.Golovko, P.Herzog, I.Kraev, A.A.Lukhanin, A.A.Belyaev, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, N.Severijns, Yu.G.Toporov, V.N.Vyachin, D.Zakoucki Angular distributions of α-particles emitted by oriented 253Es and 255Fm nuclei RADIOACTIVITY 253Es, 255Fm(α) [from Cm, 252Cf(n, X)]; measured Eα, Eγ, angular anisotropy from oriented nuclei implanted in iron.
2005SE08 Phys.Rev. C 71, 044324 (2005) N.Severijns, A.A.Belyaev, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.V.Golovko, G.M.Gurevich, P.Herzog, I.S.Kraev, A.A.Lukhanin, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, Yu.G.Toporov, C.Tramm, V.N.Vyachin, D.Zakoucky, E.Zotov Angular distribution of particles from oriented 253, 254Es and 255Fm nuclei RADIOACTIVITY 253,254Es, 255Fm(α) [from 252Cf(n, X)]; measured Eα, angular distributions from decay of oriented nuclei; deduced anisotropies. Comparison with model predictions.
doi: 10.1103/PhysRevC.71.044324
2005SE14 Phys.Rev. C 71, 064310 (2005) N.Severijns, D.Venos, P.Schuurmans, T.Phalet, M.Honusek, D.Srnka, B.Vereecke, S.Versyck, D.Zakoucky, U.Koster, M.Beck, B.Delaure, V.Golovko, I.Kraev Isospin mixing in the T=5/2 ground state of 71As NUCLEAR MOMENTS 71As; measured Eγ, Eβ, β-decay angular distributions from oriented nuclei; deduced β-asymmetry parameter. 71As deduced ground-state admixture. Low-temperature nuclear orientation technique. RADIOACTIVITY 71As(β+); measured Eγ, Eβ, β-decay angular distributions from oriented nuclei; deduced β-asymmetry parameter. 71As deduced ground-state admixture. Low-temperature nuclear orientation technique.
doi: 10.1103/PhysRevC.71.064310
2004GO39 Phys.Rev. C 70, 014312 (2004) V.V.Golovko, I.Kraev, T.Phalet, N.Severijns, B.Delaure, M.Beck, V.Kozlov, A.Lindroth, S.Versyck, D.Zakoucky, D.Venos, D.Srnka, M.Honusek, P.Herzog, C.Tramm, U.Koster, I.S.Towner Nuclear magnetic moment of 59Cu with on-line β-NMR on oriented nuclei RADIOACTIVITY 59Cu(β+); measured Eβ, Iβ(θ, H), NMR spectrum from low-temperature oriented source. 59Cu deduced μ. Comparison with model predictions.
doi: 10.1103/PhysRevC.70.014312
2004GU22 Bull.Rus.Acad.Sci.Phys. 68, 1721 (2004) G.M.Gurevich, A.L.Erzinkyan, P.-D.Eversheim, V.T.Filimonov, V.Golovko, P.Herzog, I.Kraev, A.M.Lapik, A.A.Lukhanin, A.A.Belyaev, V.I.Noga, V.P.Parfenova, T.Phalet, A.V.Rusakov, N.Severijns, Yu.G.Toporov, V.N.Vyachin, D.Zakoucky Angular anisotropy of α-decay and spontaneous fission of oriented Am, Es, and Fm nuclei RADIOACTIVITY 253,254Es, 255Fm(α); measured Eα, angular distributions from decay of oriented nuclei; deduced anisotropies.
2004ZA01 Nucl.Instrum.Methods Phys.Res. A520, 80 (2004) D.Zakoucky, D.Srnka, D.Venos, V.Golovko, I.Kraev, T.Phalet, P.Schuurmans, N.Severijns, B.Vereecke, S.Versyck, and the NICOLE and ISOLDE Collaborations HPGe detectors for low-temperature nuclear orientation NUCLEAR MOMENTS 71As, 59Cu; measured β-decay angular distributions from oriented nuclei. 71As deduced ground-state admixture. 59Cu deduced μ. Low-temperature nuclear orientation technique.
doi: 10.1016/j.nima.2003.11.226
2003LI52 Nucl.Phys. A721, 1103c (2003) A.Lindroth, M.Beck, B.Delaure, V.Yu.Kozlov, N.Severijns, F.Ames, D.Beck, V.V.Golovko, I.Kraev, T.Phalet, S.Versyck WITCH: Testing the Standard Model using a β-recoil Spectrometer with a Trapped Ion Cloud as Source
doi: 10.1016/S0375-9474(03)01295-8
2003VE03 At.Data Nucl.Data Tables 83, 1 (2003) D.Venos, D.Zakoucky, N.Severijns Spin-lattice relaxation attenuation coefficients for on-line nuclear orientation experiments
doi: 10.1016/S0092-640X(02)00016-5
2003VO01 Eur.Phys.J. A 16, 139 (2003) V.Vorobel, Ch.Briancon, V.Brudanin, V.Egorov, J.Deutsch, R.Prieels, N.Severijns, Yu.Shitov, Ch.Vieu, Ts.Vylov, I.Yutlandov, Sh.Zaparov Beta-neutrino angular correlation in the decay of 14O RADIOACTIVITY 14O(β+) [from 12C(3He, n)]; measured Eγ, βγ-coin, angular correlation; deduced beta-neutrino coupling coefficient. Role of interatomic interactions discussed.
doi: 10.1140/epja/i2002-10067-y
2002BE54 Nucl.Phys. A701, 369c (2002) D.Beck, F.Ames, M.Beck, G.Bollen, B.Delaure, J.Deutsch, J.Dilling, O.Forstner, T.Phalet, R.Prieels, W.Quint, P.Schmidt, P.Schuurmans, N.Severijns, B.Vereecke, S.Versyck, and the EUROTRAPS Collaboration Search for New Physics in Beta-Neutrino Correlations with the WITCH Spectrometer
doi: 10.1016/S0375-9474(01)01612-8
2002BE79 Pisma Zh.Eksp.Teor.Fiz. 76, 392 (2002); JETP Lett. 76, 332 (2002) M.Beck, J.Byrne, R.U.Khafizov, V.Yu.Kozlov, Yu.A.Mostovoi, O.V.Rozhnov, N.Severijns, V.A.Solovei The Upper Limit of the Branching Ratio for Radiative Beta Decay of Free Neutrons RADIOACTIVITY 1n(β-); measured radiative decay mode branching ratio upper limit.
doi: 10.1134/1.1525031
2002SE08 Eur.Phys.J. A 15, 217 (2002) Low-energy weak-interaction studies
doi: 10.1140/epja/i2002-10040-x
2002VO11 Czech.J.Phys. 52, 547 (2002) V.Vorobel, V.Egorov, V.Brudanin, Yu.Shitov, Sh.Zaparov, J.Deutsch, R.Prieels, Ch.Briancon, N.Severijns Investigation of β-ν Angular Correlation in the β+ Decay of 18Ne and 14O RADIOACTIVITY 14O, 18Ne(β+) [from 12C, 16O(3He, n)]; measured Eγ, βγ-coin; deduced β-ν angular correlation.
doi: 10.1023/A:1015365511995
2001BE74 Hyperfine Interactions 132, 473 (2001) D.Beck, F.Ames, M.Beck, G.Bollen, B.Delaure, P.Schuurmans, S.Schwarz, P.Schmidt, N.Severijns, O.Forstner Space Charge Effects in a Gas Filled Penning Trap
doi: 10.1023/A:1011974828147
2001GA59 Eur.Phys.J. A 11, 413 (2001) M.Gaelens, J.Andrzejewski, J.Camps, P.Decrock, M.Huyse, K.Kruglov, W.F.Mueller, A.Piechaczek, N.Severijns, J.Szerypo, G.Vancraeynest, P.Van Duppen, J.Wauters High-Precision Measurement of the 14O Half-Life using a Mass-Separated Radioactive Beam RADIOACTIVITY 14O(EC) [from 12C(3He, n), E=36 MeV]; measured Eγ, T1/2. Isotope Separator On-line method. Comparison with earlier data.
doi: 10.1007/s100500170053
2001TH18 Nucl.Phys. A694, 559 (2001) E.Thomas, R.Prieels, M.Allet, K.Bodek, J.Camps, J.Deutsch, F.Gimeno-Nogues, J.Govaerts, J.Lang, O.Naviliat-Cuncic, I.Pepe, P.Quin, N.Severijns, J.Sromicki Positron Polarization in the Decay of Polarized 12N: A precision tests of the standard model RADIOACTIVITY 12N(β+) [from 12C(polarized p, n)]; measured positrons longitudinal polarization following decay of polarized source; deduced constraints on mass of right-handed gauge boson. Comparison with standard model predictions.
doi: 10.1016/S0375-9474(01)01083-1
2000SC18 Nucl.Phys. A672, 89 (2000) P.Schuurmans, J.Camps, T.Phalet, N.Severijns, B.Vereecke, S.Versyck Isospin Mixing in the Ground State of 52Mn RADIOACTIVITY 52Mn(β+) [from Fe(p, X)]; measured Eβ, Iβ(θ) from oriented source; deduced β asymmetry parameter. 52Mn deduced isospin mixing probability. Comparison with model prediction.
doi: 10.1016/S0375-9474(00)00055-5
2000SC46 Hyperfine Interactions 129, 163 (2000) P.Schuurmans, I.Berkes, P.Herzog, N.Severijns, and the NICOLE and the ISOLDE Collaboration Alpha-anisotropy studies of near spherical nuclei at ISOLDE RADIOACTIVITY 189,191,193Bi, 205,207,209Rn, 199,201,203,205,207,209,211,215,217At(α); measured α anisotropy vs temperature, oriented nuclei; analyzed α anisotropy data; deduced mixing ratios. Comparison with model predictions.
doi: 10.1023/A:1012657715807
2000SE23 Hyperfine Interactions 129, 223 (2000) N.Severijns, J.Deutsch, D.Beck, M.Beck, B.Delaure, T.Phalet, R.Prieels, P.Schuurmans, B.Vereecke, S.Versyck Fundamental weak interaction studies using polarised nuclei and ion traps RADIOACTIVITY 17F(β+), 118Sb(β+), (EC); measured polarization asymmetry correlation. Polarized nuclei.
doi: 10.1023/A:1012665917625
1999SC17 Phys.Rev.Lett. 82, 4787 (1999) P.Schuurmans, J.Camps, P.De Moor, K.Freitag, P.Herzog, M.Huyse, R.Paulsen, N.Severijns, A.Van Geert, P.Van Duppen, B.Will, and the NICOLE and ISOLDE Collaborations Angular Distributions of α Particles Emitted by Deformed Oriented Nuclei RADIOACTIVITY 221Fr(α) [from 221Rn decay following Th(p, X)]; 227,229Pa(α) [from 232Th(p, xn)]; measured Eα, Iα(θ) from oriented nuclei; deduced anisotropy, deformation effects. Mass-separated sources.
doi: 10.1103/PhysRevLett.82.4787
1998BR23 Yad.Fiz. 61, No 8, 1395 (1998); Phys.Atomic Nuclei 61, 1293 (1998) Ch.Briancon, V.B.Brudanin, J.Deutsch, V.G.Egorov, T.V.Filipova, J.Govaerts, C.Petitjean, R.Prieels, N.Severijns, Yu.A.Shitov, V.Vorobel, Ts.Vylov, V.Wiaux, I.A.Yutlandov, Sh.Zaparov Experiment AnCor: Search for scalar interaction in β decay and μ capture RADIOACTIVITY 14O, 18Ne(β+); measured βγ-coin, βγ(θ); deduced β-ν angular correlation. NUCLEAR REACTIONS 16O(μ, ν), E not given; measured Doppler-shifted Eγ, Iγ; deduced correlation coefficient.
1998KR23 Phys.Rev. C58, 3181 (1998) J.Krause, I.Berkes, J.Camps, M.De Jesus, P.De Moor, P.Herzog, M.Massaq, T.Phalet, P.Schuurmans, N.Severijns, A.Van Geert, D.Venos, B.Vereecke, B.Will, D.Zakoucky, and the NICOLE and ISOLDE Collaborations α Particle Angular Distributions of 189, 191, 193Bi RADIOACTIVITY 189,191,193Bi(α) [from Th(p, X), E=1 GeV]; measured Eα, Iα(θ) from oriented nuclei; deduced angular distribution parameters, mixing ratios, structure effects.
doi: 10.1103/PhysRevC.58.3181
1998SE04 Nucl.Phys. A629, 423c (1998) N.Severijns, M.Allet, K.Bodek, B.A.Brown, J.Camps, P.De Moor, J.Deutsch, M.Ferro-Luzzi, F.Gimeno-Nogues, J.Govaerts, B.R.Holstein, R.Kirchner, J.Lang, R.Muller, S.Navert, O.Naviliat-Cuncic, T.Otto, I.Pepe, R.Prieels, P.A.Quin, P.Schuurmans, J.Sromicki, E.Stephan, E.Thomas, A.Van Geert, L.Vanneste, B.Vereecke, J.Zejma Helicity Structure in Low- and Intermediate-Energy Weak Interaction RADIOACTIVITY 12N, 107In(β+); measured β+ polarization asymmetry from decay of polarized nuclei; deduced weak interaction helicity structure features, W gauge boson mass lower limit.
doi: 10.1016/S0375-9474(97)00719-7
1998VA22 Yad.Fiz. 61, No 8, 1376 (1998); Phys.Atomic Nuclei 61, 1274 (1998) A.Van Geert, P.De Moor, W.Belmans, T.Phalet, P.Schuurmans, N.Severijns, L.Vanneste, B.Vereecke, M.Glugla Results of the First Nuclear-Orientation Experiment on 3H RADIOACTIVITY 3H(β-); measured Eβ, Iβ(H, θ); deduced asymmetry coefficient.
1997EG02 Nucl.Phys. A621, 745 (1997) V.Egorov, Ch.Briancon, V.Brudanin, J.Dionisio, J.Deutsch, V.Gorozhankin, Yu.Gurov, R.Prieels, V.Sandukovsky, N.Severijns, M.Simoes, Yu.Shitov, Ch.Vieu, V.Vorobel, Ts.Vylov, I.Yutlandov, Sh.Zaparov Beta-Neutrino Angular Correlation in the Decay of 18Ne RADIOACTIVITY 18Ne(β+); measured βγ-coin, βγ(θ), Iγ(θ); deduced Doppler shift, parameter C(s)/C(v). Source from 3He bombardment of B2O3 thin foil.
doi: 10.1016/S0375-9474(97)00178-4
1997SC26 Z.Phys. A358, 239 (1997) P.Schuurmans, B.Will, I.Berkes, J.Camps, M.De Jesus, P.De Moor, P.Herzog, M.Lindroos, R.Paulsen, N.Severijns, A.Van Geert, P.Van Duppen, L.Vanneste, and the NICOLE and ISOLDE Collaboration The Angular Distributions of α-Particles Emitted by Oriented Nuclei and Their Relation to Nuclear Structure and Deformation RADIOACTIVITY 205,207,209,211At(α); 205,207,209Rn(α); 221Fr(α); 227,229Pa(α); measured Iα(θ), oriented nuclei; deduced structure, deformation roles. Low-temperature nuclear orientation, different models .
doi: 10.1007/s002180050318
1996AL23 Phys.Lett. 383B, 139 (1996) M.Allet, K.Bodek, J.Camps, J.Deutsch, M.Ferro-Luzzi, F.Gimeno-Nogues, J.Govaerts, J.Lang, R.Muller, S.Navert, O.Naviliat-Cuncic, I.Pepe, R.Prieels, P.Quin, N.Severijns, J.Sromicki, E.Stephan, E.Thomas, J.Zejma Search for Right-Handed Weak Currents in the β-Asymmetry-Polarization Correlation from 12N Decay RADIOACTIVITY 12N(β+); measured β+ polarization, polarized source; deduced right-handed gauge boson mass lower limit.
doi: 10.1016/0370-2693(96)00724-1
1996SC35 Phys.Rev.Lett. 77, 4720 (1996) P.Schuurmans, B.Will, I.Berkes, J.Camps, M.De Jesus, P.De Moor, P.Herzog, M.Lindroos, R.Paulsen, N.Severijns, A.Van Geert, P.Van Duppen, L.Vanneste, and the NICOLE and ISOLDE Collaborations Alpha-Particle Angular Distributions of At and Rn Isotopes and Their Relation to Nuclear Structure RADIOACTIVITY 205,207,209Rn, 205,207,209,211,217At(α); measured α anisotropy vs temperature, oriented nuclei. 199,201,203At(α); analyzed α anisotropy data; deduced structure related features.
doi: 10.1103/PhysRevLett.77.4720
1996TR12 Czech.J.Phys. B46, 2207 (1996) M.Trhlik, P.De Moor, P.Pari, M.Rotter, N.Severijns, A.Van Geert, L.Vanneste Low-Temperature Nuclear Orientation of 160Tb in Tb/Fe Multilayers RADIOACTIVITY 160Tb(β-); measured Iγ(θ), nuclear orientation at low temperature; deduced Tb magnetic moments perpendicular magnetic anisotropy features in Tb/Fe multilayers.
doi: 10.1007/BF02571095
1995VA27 Phys.Rev.Lett. 75, 641 (1995) W.Vanderpoorten, J.Camps, P.De Moor, M.Gaelens, P.Schuurmans, N.Severijns, L.Vanneste, J.Wouters In-Beam Polarization of Light Radioactive Nuclei Using Grazing Surface Scattering RADIOACTIVITY 13N(β+); measured β asymmetry following beam implantation in Pt; deduced beam polarization.
doi: 10.1103/PhysRevLett.75.641
1995VE09 Nucl.Instrum.Methods Phys.Res. A365, 419 (1995) D.Venos, D.Srnka, J.Slesinger, D.Zakoucky, J.Stehno, N.Severijns, A.Van Geert Performance of HPGe Detectors in the Temperature Region RADIOACTIVITY 207Bi(EC), (β+); measured I(ce), γ spectra; deduced detector characteristics. Planar hyperpure Ge detectors, low temperature.
doi: 10.1016/0168-9002(95)00510-2
1993SE03 Nucl.Phys. A553, 827c (1993) N.Severijns, M.Allet, J.Camps, P.De Moor, J.Deutsch, F.Gimeno-Nogues, B.R.Holstein, B.H.King, O.Naviliat-Cuncic, I.Pepe, R.Prieels, P.A.Quin, P.Schuurmans, R.Siebelink, W.Vanderpoorten, J.Vanhaverbeke, L.Vanneste, J.Wouters Bounds on Right-Handed Currents from a Relative β-Polarization Measurement with Polarized 107In RADIOACTIVITY 107In(β+), (EC) [from Mo(14N, X), E=120 MeV]; measured β+ longitudinal polarization; deduced W-gauge boson mass limit implications.
doi: 10.1016/0375-9474(93)90705-3
1993SE06 Phys.Rev.Lett. 70, 4047 (1993) N.Severijns, J.Deutsch, F.Gimeno-Nogues, B.H.King, I.Pepe, R.Prieels, P.A.Quin, J.Camps, P.De Moor, P.Schuurmans, W.Vanderpoorten, L.Vanneste, J.Wouters, M.Allet, O.Naviliat-Cuncic, B.R.Holstein Limits on Right-Handed Charged Weak Currents from a Polarization-Asymmetry Correlation Experiment with 107In RADIOACTIVITY 107In(EC), (β+) [from Mo(14N, X), E=120 MeV]; measured β+ longitudinal polarization with respect to source polarization; deduced standard model extensions constraints, charged W gauge boson mass lower limit. Polarized source.
doi: 10.1103/PhysRevLett.70.4047
1993SE15 Hyperfine Interactions 78, 91 (1993) N.Severijns, R.Prieels, M.Allet, J.Camps, P.De Moor, J.Deutsch, F.Gimeno-Nogues, B.R.Holstein, B.H.King, O.Naviliat-Cuncic, I.Pepe, P.A.Quin, P.Schuurmans, R.Siebelink, W.Vanderpoorten, J.Vanhaverbeke, L.Vanneste, J.Wouters Study of the Violation of Parity in Nuclear β-Decay via a Relative β-Polarization Measurement with the Polarized 107In Nuclei RADIOACTIVITY 107In(EC), (β+); measured β+ longitudinal polarization, polarized source; deduced mass lower limit for predominantly right-handed charged W gauge boson.
doi: 10.1007/BF00568121
1993TR09 Hyperfine Interactions 78, 505 (1993) M.Trhlik, P.De Moor, A.L.Erzinkyan, G.M.Gurevich, V.P.Parfenova, P.Schuurmans, N.Severijns, W.Vanderpoorten, L.Vanneste, J.Wouters Noncollinearity of Mn Spin in Ferromagnetic (Pt)Fe Alloy: A nuclear orientation study RADIOACTIVITY 54Mn(EC); measured γ(θ), oriented nuclei, low temperature; deduced Mn spin noncollinearity in ferromagnetic PtFe alloy.
doi: 10.1007/BF00568183
1992CA12 J.Phys.(London) G18, 823 (1992) A.S.Carnoy, J.Deutsch, R.Prieels, N.Severijns, P.A.Quin Is There an Indication for the Existence of Right-Handed Weak Currents in Nuclear Beta Decay ( Question ) RADIOACTIVITY 14O, 42Sc, 1n; calculated β-decay ft; 1n, 19Ne; analyzed decay data; deduced right handed weak gauge boson evidence, mass estimate. Left-right symmetric models.
doi: 10.1088/0954-3899/18/5/011
1992DE54 Hyperfine Interactions 75, 439 (1992) J.K.Deng, J.H.Hamilton, A.V.Ramayya, W.C.Ma, X.W.Zhao, J.Kormicki, N.Severijns, L.Vanneste, W.D.Hamilton, P.F.Mantica, Jr., H.K.Carter On-Line Nuclear Orientation of 70As RADIOACTIVITY 70As(β+), (EC); measured γ-anistropy. 70Ge deduced transitions δ, symmetry features. On-line nuclear orientation.
doi: 10.1007/BF02399001
1992SC26 Hyperfine Interactions 75, 423 (1992) P.Schuurmans, J.Wouters, P.De Moor, N.Severijns, W.Vanderpoorten, J.Vanhaverbeke, L.Vanneste Anisotropic Alpha-Emission in the 223Ra Decay Chain RADIOACTIVITY 223Ra(α); 219Rn(α) [from 223Ra(α-decay)]; 215Po(α) [from 219Rn(α-decay)]; 211Bi(α), (β-) [from 211Pb(β-) following 215Po-decay]; measured Eα, Iα, Eγ, Iγ, α-anisotropy. High resolution α-detection, low temperature nuclear orientation.
doi: 10.1007/BF02398999
1992SE10 Hyperfine Interactions 75, 181 (1992) N.Severijns, R.Prieels, J.Deutsch, F.Gimeno-Nogues, I.Pepe, P.A.Quin, P.De Moor, P.Schuurmans, R.Siebelink, W.Vanderpoorten, J.Vanhaverbeke, L.Vanneste, J.Wouters, M.Allet, O.Naviliat-Cuncic The Polarization-Asymmetry Correlation of 107In and Parity Violation RADIOACTIVITY 107In(β+); measured β+-spectra, asymmetry; deduced longitudinal polarization.
doi: 10.1007/BF02398975
1992VA17 Hyperfine Interactions 75, 331 (1992) W.Vanderpoorten, P.De Moor, P.Schuurmans, R.Siebelink, L.Vanneste, J.Wouters, N.Severijns, J.Vanhaverbeke, R.Eder, H.Haas, and the NICOLE and ISOLDE Collaborations The Hyperfine Filed of Sodium in Iron RADIOACTIVITY 24Na(β-); measured β-, γ-anisotropies; deduced hyperfine field, relaxation time upper limit in Fe. Low temperature nuclear orientation.
doi: 10.1007/BF02398990
1992WO14 Hyperfine Interactions 75, 381 (1992) J.Wouters, P.De Moor, P.Schuurmans, N.Severijns, W.Vanderpoorten, L.Vanneste Particle Detection from Oriented Nuclei COMPILATION 241Am, 253Es, 227,226Pa, 226Th; compiled, reviewed α-spectra data. Cryogenically oriented nuclei.
1991LI32 Nucl.Phys. A533, 292 (1991) J.Liechti, M.Allet, A.Converse, J.Deutsch, F.Gimeno-Nogues, J.Lang, H.Luscher, R.Muller, O.Naviliat-Cuncic, R.Prieels, P.A.Quin, N.Severijns, J.Sromicki Production of Polarized 12N with the 12C(p(pol), 12N(pol))n0 Reaction NUCLEAR REACTIONS 12C(polarized p, 12N), E=50, 72 MeV; measured polarization transfer coefficient vs θ. DWBA analysis. RADIOACTIVITY 12N [from 12C(polarized p, 12N), E=50, 72 MeV]; measured β-decay asymmetry.
doi: 10.1016/0375-9474(91)90491-N
1991NA05 J.Phys.(London) G17, 919 (1991) O.Naviliat-Cuncic, T.A.Girard, J.Deutsch, N.Severijns Left-Right Symmetry Breaking Sensitivity of β-Asymmetry Measurements RADIOACTIVITY 13N, 17F, 35Ar, 29P, 31S; analyzed decay data; deduced β-asymmetry parameters limits, left-right symmetry breaking role. Other nuclei considered.
doi: 10.1088/0954-3899/17/6/013
1991WO04 J.Phys.(London) G17, 1673 (1991) J.Wouters, N.Severijns, J.Vanhaverbeke, L.Vanneste Magnetic Moments of Po Isotopes and the Quenching of Nuclear Magnetism in the 208Pb Region RADIOACTIVITY 199m,201m,201,203Po [from Re(20Ne, xnp)]; measured γ(θ), α(θ), oriented nuclei; deduced μ.
doi: 10.1088/0954-3899/17/11/014
1990DU06 Hyperfine Interactions 59, 497 (1990) J.Dupak, S.Kapusta, J.Kuriplach, B.Sedlak, N.Severijns, M.Trhlik, W.Vanderpoorten, J.Vanhaverbeke, L.Vanneste, M.Vobecky, J.Wouters Nuclear Orientation Study of 160Tb Impurity in Gadolinium Single Crystal RADIOACTIVITY 160Tb; measured γ-anisotropy, oriented nuclei. Source as impurity in Gd single crystal.
Back to query form [Next] |