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NSR database version of April 11, 2024.

Search: Author = H.Wollnik

Found 88 matches.

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2024XI06      Phys.Rev. C 109, 035804 (2024)

W.Xian, S.Chen, S.Nikas, M.Rosenbusch, M.Wada, H.Ishiyama, D.Hou, S.Iimura, S.Nishimura, P.Schury, A.Takamine, S.Yan, F.Browne, P.Doornenbal, F.Flavigny, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, J.Lee, J.Liu, H.Miyatake, S.Michimasa, J.Y.Moon, S.Naimi, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, V.Werner, K.Wimmer, H.Wollnik

Mass measurements of neutron-rich A ≈ 90 nuclei constrain element abundances

doi: 10.1103/PhysRevC.109.035804
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2023HO11      Phys.Rev. C 108, 054312 (2023)

D.S.Hou, A.Takamine, M.Rosenbusch, W.D.Xian, S.Iimura, S.D.Chen, M.Wada, H.Ishiyama, P.Schury, Z.M.Niu, H.Z.Liang, S.X.Yan, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, W.Korten, J.Lee, J.J.Liu, Z.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik

First direct mass measurement for neutron-rich 112Mo with the new ZD-MRTOF mass spectrograph system

doi: 10.1103/PhysRevC.108.054312
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2023II01      Phys.Rev.Lett. 130, 012501 (2023)

S.Iimura, M.Rosenbusch, A.Takamine, Y.Tsunoda, M.Wada, S.Chen, D.S.Hou, W.Xian, H.Ishiyama, S.Yan, P.Schury, H.Crawford, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.Koiwai, T.M.Kojima, H.Koura, J.Lee, J.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, A.Odahara, T.Otsuka, S.Paschalis, M.Petri, N.Shimizu, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik

Study of the N=32 and N=34 Shell Gap for Ti and V by the First High-Precision Multireflection Time-of-Flight Mass Measurements at BigRIPS-SLOWRI

ATOMIC MASSES 55Sc, 56,58Ti, 56,57,58,59V; measured TOF; deduced masses, nonexistence of the N=34 empirical two-neutron shell gaps for Ti and V, and the enhanced energy gap in Ca. Comparison with new Monte Carlo shell model calculations. RIKEN's Radioactive Isotope Beam Factory (RIBF).

doi: 10.1103/PhysRevLett.130.012501
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2021NI08      Phys.Rev. C 104, 044617 (2021)

T.Niwase, M.Wada, P.Schury, P.Brionnet, S.D.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, J.Liu, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan

α-decay-correlated mass measurement of 206, 207g, mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system

ATOMIC MASSES 206,207,207mRa; measured time-of-flight spectra by α-decay-correlated mass spectroscopy using multireflection time-of-flight mass spectrograph (MRTOF-MS) system, with an α-TOF detector at SHE-Mass-II facility of RIBF-RIKEN; deduced mass excesses, and compared with evaluated data in AME2020. 207mRa; deduced excitation energy of the isomer, J, π. 206,207,207mRa isotopes produced in 159Tb(51V, X), E=306 MeV, followed by separation of evaporation residues using recoil ion separator GARIS-II at RIKEN.

RADIOACTIVITY 206,207mRa(α)[from 159Tb(51V, X), E=306 MeV at RIBF-RIKEN]; measured Eα, Iα, T1/2 of decays of 206Ra and 207mRa, excitation energy of the isomer; deduced α-reduced width, configuration. Systematics of spins, parities, Eα, T1/2, α-branching ratios, reduced α widths for 203,203m,205,205m,207,207mRa. 198,199Po, 202,203At, 202,203Rn, 206,207Fr, 207Ra; observed α spectra from decays.

doi: 10.1103/PhysRevC.104.044617
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2021SC14      Phys.Rev. C 104, L021304 (2021)

P.Schury, T.Niwase, M.Wada, P.Brionnet, S.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, H.Koura, J.J.Liu, H.Miyatake, J.-Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan

First high-precision direct determination of the atomic mass of a superheavy nuclide

ATOMIC MASSES 257Db; measured Eα, time-of flight, distribution of time-of-flight (ToF)-correlated α-decay events using multireflection time-of-flight mass spectrograph (MRTOF-MS) at RIKEN Ring Cyclotron facility; deduced A/q and mass excess for each of the 11 observed correlated events assigned to 257Db. Comparison with AME2016 evaluated data. 257Db isotope produced in 208Pb(51V, 2n), E=306 MeV reaction, followed by separation of fragments using GARIS-II separator.

doi: 10.1103/PhysRevC.104.L021304
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2018IT04      Phys.Rev.Lett. 120, 152501 (2018)

Y.Ito, P.Schury, M.Wada, F.Arai, H.Haba, Y.Hirayama, S.Ishizawa, D.Kaji, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, M.Mukai, I.Murray, T.Niwase, K.Okada, A.Ozawa, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, S.Yamaki

First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph

NUCLEAR REACTIONS 232Th(19F, 5n)246Es, E=99.6, 103 MeV;238U(18O, 5n)251Fm, E=93.9 MeV; 203Tl(48Ca, 2n)249Md, E=215 MeV; 205Tl(48Ca, 3n)250Md, E=223 MeV; 205Tl(48Ca, 2n)251Md, E=215 MeV; 238U(19F, 5n)252md, E=98.6 MeV; 208Pb(48Ca, 2n)254No, E=219 MeV; measured reaction products, TOF; deduced mass excesses. Comparison with available data.

ATOMIC MASSES 253,254Lr, 257,258Db, 261,262Bh, 266Mt; analyzed available data; deduced mass excesses.

doi: 10.1103/PhysRevLett.120.152501
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2018KI21      Int.J. Mass Spectrom. 430, 134 (2018)

S.Kimura, Y.Ito, D.Kaji, P.Schury, M.Wada, H.Haba, T.Hashimoto, Y.Hirayama, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, M.Mukai, I.Murray, A.Ozawa, M.Rosenbusch, H.Schatz, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik

Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph

ATOMIC MASSES 63Cu, 64,65,66Zn, 65Ga, 65,66,67Ge, 67As, 78,81Br, 80Rb, 79Sr; measured frequencies, TOF; deduced masses, new mass excess values. Comparison with AME16 evaluations.

NUCLEAR REACTIONS S(36Ar, X)63Cu/64Zn/65Zn/66Zn/65Ga/65Ge/66Ge/67Ge/67As/78Br/81Br/80Rb/79Sr, E=3.30 MeV/nucleon; measured reaction products; deduced σ. Comparison with theoretical calculations of fusion-evaporation reactions.

doi: 10.1016/j.ijms.2018.05.001
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2018RO14      Phys.Rev. C 97, 064306 (2018)

M.Rosenbusch, Y.Ito, P.Schury, M.Wada, D.Kaji, K.Morimoto, H.Haba, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morita, I.Murray, T.Niwase, A.Ozawa, M.Reponen, A.Takamine, T.Tanaka, H.Wollnik

New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes

ATOMIC MASSES 210,211,212,214Ra, 210,211,212,213,214Ac; measured time of flight, and mass excess using multireflection time-of-flight mass spectrograph (MRTOF-MS) at superheavy element (SHE) mass facility of RIKEN-KEK, and using gas-filled recoil ion separator GARIS-II at RIKEN. Comparison with values from AME-2016. Ra and Ac isotopes produced in 169Tm(48Ca, X), E=5, 6 MeV/nucleon reaction at RIKEN. Z=82-92, N=121-129; systematics of S(2n) values.

doi: 10.1103/PhysRevC.97.064306
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2017SC02      Phys.Rev. C 95, 011305 (2017)

P.Schury, M.Wada, Y.Ito, D.Kaji, F.Arai, M.MacCormick, I.Murray, H.Haba, S.Jeong, S.Kimura, H.Koura, H.Miyatake, K.Morimoto, K.Morita, A.Ozawa, M.Rosenbusch, M.Reponen, P.-A.Soderstrom, A.Takamine, T.Tanaka, H.Wollnik

First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reactions: Toward identification of superheavy elements via mass spectroscopy

ATOMIC MASSES 204,205,206Fr, 204,205,206Rn, 204,205,206At, 204,205Po, 205Bi; measured time-of-flight spectra, precise atomic masses with reference to that of 205Fr using GARIS-II recoil ion separator GARIS-II and multireflection time-of-flight mass spectrographs (MRTOF-MS) at RILAC-RIKEN facility. Isotopes produced in 165Ho, 169Tm(40Ar, X), E=4.825, 5.16 MeV/nucleon. Comparison with AME-2012 values, and previous experimental values.

doi: 10.1103/PhysRevC.95.011305
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2014TA10      Phys.Rev.Lett. 112, 162502 (2014)

A.Takamine, M.Wada, K.Okada, T.Sonoda, P.Schury, T.Nakamura, Y.Kanai, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Hyperfine Structure Constant of the Neutron Halo Nucleus 11Be+

NUCLEAR MOMENTS 11Be; measured laser-microwave double resonance spectra; deduced hyperfine structure constants, nuclear magnetic moment. Comparison with available data.

doi: 10.1103/PhysRevLett.112.162502
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2013IT01      Phys.Rev. C 88, 011306 (2013)

Y.Ito, P.Schury, M.Wada, S.Naimi, T.Sonoda, H.Mita, F.Arai, A.Takamine, K.Okada, A.Ozawa, H.Wollnik

Single-reference high-precision mass measurement with a multireflection time-of-flight mass spectrograph

ATOMIC MASSES 7,8Li, 9Be, 12C; measured time-of-flight (TOF) using a multireflection TOF mass spectrograph (MRTOF) at RIKEN facility. 8Li beam produced in 9Be(13C, X), E=100 MeV/nucleon. 7,8Li, 9Be; deduced mass excesses using 12C as a reference. Comparison with AME-12 values.

doi: 10.1103/PhysRevC.88.011306
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2009SC30      Eur.Phys.J. A 42, 343 (2009)

P.Schury, K.Okada, S.Shchepunov, T.Sonoda, A.Takamine, M.Wada, H.Wollnik, Y.Yamazaki

Multi-reflection time-of-flight mass spectrograph for short-lived radioactive ions

doi: 10.1140/epja/i2009-10882-6
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2009TA35      Eur.Phys.J. A 42, 369 (2009)

A.Takamine, M.Wada, K.Okada, T.Nakamura, P.Schury, T.Sonoda, V.Lioubimov, H.Iimura, Y.Yamazaki, Y.Kanai, T.M.Kojima, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Isotope shift measurements of 11, 9, 7Be+

ATOMIC PHYSICS 7,9,11Be; measured optical transition energy, hyperfine constant; deduced microwave resonance and optical-optical double-resonance spectra, ground-state hyperfine splittings. Cryogenic linear Paul trap.

doi: 10.1140/epja/i2009-10883-5
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2008OK01      Phys.Rev.Lett. 101, 212502 (2008)

K.Okada, M.Wada, T.Nakamura, A.Takamine, V.Lioubimov, P.Schury, Y.Ishida, T.Sonoda, M.Ogawa, Y.Yamazaki, Y.Kanai, T.M.Kojima, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Precision Measurement of the Hyperfine Structure of Laser-Cooled Radioactive 7Be+ Ions Produced by Projectile Fragmentation

NUCLEAR MOMENTS 7Be; measured hyperfine splitting using laser-microwave double-resonance spectroscopy. Deduced nuclear magnetic moment.

doi: 10.1103/PhysRevLett.101.212502
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2007WA24      Hyperfine Interactions 173, 153 (2007)

M.Wada, Y.Ishida, T.Nakamura, Y.Kanai, T.M.Kojima, A.Takamine, Y.Yamazaki, K.Okada, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, V.Varentsov, H.Wollnik, V.Lioubimov, H.A.Schuessler

Laser spectroscopy of trapped 7Be and 10Be at a prototype slow RI-beam facility of RIKEN

doi: 10.1007/s10751-007-9552-1
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2006BO41      Int.J. Mass Spectrom. 251, 212 (2006)

F.Bosch, H.Geissel, Yu.A.Litvinov, K.Beckert, B.Franzke, M.Hausmann, Th.Kerscher, O.Klepper, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.N.Novikov, Z.Patyk, T.Radon, C.Scheidenberger, M.Steck, H.Wollnik

Experiments with stored exotic nuclei at relativistic energies

ATOMIC MASSES 140Pr, 140Ce, 147,147mDy; A=144-207; reviewed Shottky and mass spectra.

RADIOACTIVITY 140Pr, 207Tl, 235Ac(β-); measured half-life of bare and few-electron ions.

doi: 10.1016/j.ijms.2006.01.037
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2006HA62      Int.J. Mass Spectrom. 251, 119 (2006)

P.A.Hausladen, J.R.Beene, A.Galindo-Uribarri, Y.Larochelle, J.F.Liang, P.E.Mueller, D.Shapira, D.W.Stracener, J.Thomas, R.L.Varner, H.Wollnik

Opportunistic mass measurements at the Holifield Radioactive Ion Beam Facility

ATOMIC MASSES 77,78,79Cu, 83,84,85,86Ge; measured mass excesses. Isotopes produced from 238U(p, F) reaction at beam energy 42 MeV using ISOL method. Proposed technique for measuring mass differences developed at the Holifield Radioactive Ion Beam Facility (HRIBF).

doi: 10.1016/j.ijms.2006.01.020
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2005LI24      Nucl.Phys. A756, 3 (2005)

Yu.A.Litvinov, H.Geissel, T.Radon, F.Attallah, G.Audi, K.Beckert, F.Bosch, M.Falch, B.Franzke, M.Hausmann, M.Hellstrom, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.N.Novikov, W.Quint, Z.Patyk, H.Reich, C.Scheidenberger, B.Schlitt, M.Steck, K.Summerer, L.Vermeeren, M.Winkler, Th.Winkler, H.Wollnik

Mass measurement of cooled neutron-deficient bismuth projectile fragments with time-resolved Schottky mass spectrometry at the FRS-ESR facility

ATOMIC MASSES Z=30-85; A=79-207; measured masses. Time-resolved Schottky mass spectrometry.

doi: 10.1016/j.nuclphysa.2005.03.015
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2005LI30      Phys.Rev.Lett. 95, 042501 (2005)

Yu.A.Litvinov, T.J.Burvenich, H.Geissel, Yu.N.Novikov, Z.Patyk, C.Scheidenberger, F.Attallah, G.Audi, K.Beckert, F.Bosch, M.Falch, B.Franzke, M.Hausmann, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, D.G.Madland, J.A.Maruhn, G.Munzenberg, F.Nolden, T.Radon, M.Steck, S.Typel, H.Wollnik

Isospin Dependence in the Odd-Even Staggering of Nuclear Binding Energies

NUCLEAR STRUCTURE Hf, W; compiled, analyzed neutron and proton pair-gap energies, odd-even staggering effect. Several models compared with data.

doi: 10.1103/PhysRevLett.95.042501
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2004GE18      Nucl.Phys. A746, 150c (2004)

H.Geissel, Yu.A.Litvinov, F.Attallah, K.Beckert, P.Beller, F.Bosch, D.Boutin, T.Faestermann, M.Falch, B.Franzke, M.Hausmann, M.Hellstrom, E.Kaza, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.-L.Kratz, S.A.Litvinov, K.E.G.Lobner, L.Maier, M.Matos, G.Munzenberg, F.Nolden, Yu.N.Novikov, T.Ohtsubo, A.Ostrowski, Z.Patyk, B.Pfeiffer, M.Portillo, T.Radon, C.Scheidenberger, V.Shishkin, J.Stadlmann, M.Steck, D.J.Vieira, H.Weick, M.Winkler, H.Wollnik, T.Yamaguchi

New results with stored exotic nuclei at relativistic energies

ATOMIC MASSES 116,135,136,137,138,139,140Te, 117,119I, 117,118,119,120,121,122Xe, 116,117,118,119,120,121,122Pd, 143Sm; measured masses. Tl; analyzed proton separation energies, mass values. Schottky mass spectrometer.

doi: 10.1016/j.nuclphysa.2004.09.030
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2004LI33      Nucl.Phys. A734, 473 (2004)

Yu.A.Litvinov, H.Geissel, Yu.N.Novikov, Z.Patyk, T.Radon, C.Scheidenberger, F.Attallah, K.Beckert, F.Bosch, M.Falch, B.Franzke, M.Hausmann, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, M.Steck, H.Wollnik

Precision Experiments with Time-Resolved Schottky Mass Spectrometry

doi: 10.1016/j.nuclphysa.2004.01.089
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2004SC37      Acta Phys.Hung.N.S. 19, 165 (2004)

C.Scheidenberger, F.Attallah, K.Beckert, P.Beller, F.Bosch, D.Boutin, H.Eickhoff, T.Faestermann, M.Falch, B.Franczak, B.Franzke, H.Geissel, M.Hausmann, M.Hellstrom, E.Kaza, Th.Kerscher, O.Klepper, H.-J.Kluge, R.Koyama, C.Kozhuharov, K.-L.Kratz, Yu.A.Litvinov, K.Lobner, L.Maier, M.Matos, G.Munzenberg, F.Nolden, Yu.N.Novikov, T.Ohtsubo, A.Ostrowski, A.Ozawa, Z.Patyk, B.Pfeiffer, M.Portillo, W.Quint, T.Radon, V.Shishkin, J.Stadlmann, M.Steck, K.Summerer, T.Suzuki, M.B.Trzhaskovskaya, D.J.Vieira, S.Watanabe, H.Weick, M.Winkler, H.Wollnik, T.Yamaguchi

Study of Basic Nuclear Properties of Highly-Charged Unstable Nuclei at the SIS-FRS-ESR Complex

doi: 10.1556/APH.19.2004.1-2.27
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2004ST05      Phys.Lett. B 586, 27 (2004)

J.Stadlmann, M.Hausmann, F.Attallah, K.Beckert, P.Beller, F.Bosch, H.Eickhoff, M.Falch, B.Franczak, B.Franzke, H.Geissel, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, Yu.A.Litvinov, K.E.G.Lobner, M.Matos, G.Munzenberg, N.Nankov, F.Nolden, Yu.N.Novikov, T.Ohtsubo, T.Radon, H.Schatz, C.Scheidenberger, M.Steck, H.Weick, H.Wollnik

Direct mass measurement of bare short-lived 44V, 48Mn, 41Ti and 45Cr ions with isochronous mass spectrometry

ATOMIC MASSES 44V, 48Mn, 41Ti, 45Cr; measured masses. In-flight separation, stored ions. Astrophysical implications discussed.

doi: 10.1016/j.physletb.2004.02.014
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2003LI42      Phys.Lett. B 573, 80 (2003)

Yu.A.Litvinov, F.Attallah, K.Beckert, F.Bosch, D.Boutin, M.Falch, B.Franzke, H.Geissel, M.Hausmann, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.N.Novikov, Z.Patyk, T.Radon, C.Scheidenberger, J.Stadlmann, M.Steck, M.B.Trzhaskovskaya, H.Wollnik

Observation of a dramatic hindrance of the nuclear decay of isomeric states for fully ionized atoms

RADIOACTIVITY 144mTb, 149mDy, 151mEr(EC), (IT) [from 209Bi fragmentation]; measured T1/2 of fully ionized atoms; deduced hindrance relative to neutral atom decay. Comparison with model predictions.

doi: 10.1016/j.physletb.2003.08.077
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2002AT01      Nucl.Phys. A701, 561c (2002)

F.Attallah, M.Hausmann, Y.A.Litvinov, T.Radon, J.Stadlmann, K.Beckert, F.Bosch, M.Falch, B.Franzke, H.Geissel, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Y.N.Novikov, Z.Patyk, W.Quint, H.Schatz, C.Scheidenberger, B.Schlitt, M.Steck, K.Summerer, H.Weick, H.Wollnik

Mass and Lifetime Measurements at the Storage Ring ESR

RADIOACTIVITY 168Ta(β+); measured T1/2 for decay of fully ionized atom.

doi: 10.1016/S0375-9474(01)01644-X
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2002NO01      Nucl.Phys. A697, 92 (2002)

Yu.N.Novikov, F.Attallah, F.Bosch, M.Falch, H.Geissel, M.Hausmann, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, Yu.A.Litvinov, K.E.G.Lobner, G.Munzenberg, Z.Patyk, T.Radon, C.Scheidenberger, A.H.Wapstra, H.Wollnik

Mass Mapping of a New Area of Neutron-Deficient Suburanium Nuclides

ATOMIC MASSES 168W, 172Os, 176Pt, 180,182,183Hg, 185Tl, 184,186,187Pb, 189,190,191Bi, 188,190,191,192,193,194,195,196Po, 193,194,195,196,197,198,199,200,201,202At, 195,196,197,198,199,200,201,202,203,204,205,206Rn, 200,201,202,203,204,205,206Fr, 202,203,204,205,206,207,208,209,210Ra, 206,207,208,209,210Ac, 209,210,211,212,213,214Th, 212,213,214Pa, 218U; analyzed α-decay data; deduced masses, proton and neutron separation energies. Comparison with mass formula predictions.

doi: 10.1016/S0375-9474(01)01233-7
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2001GE06      Nucl.Phys. A685, 115c (2001)

H.Geissel, F.Attallah, K.Beckert, F.Bosch, M.Falch, B.Franzke, M.Hausmann, Th.Kerscher, O.Klepper, H.-H.Kluge, C.Kozhuharov, Yu.Litvinov, K.E.G.Lobner, G.Munzenberg, N.Nankov, F.Nolden, Yu.Novikov, T.Ohtsubo, Z.Patyk, T.Radon, C.Scheidenberger, J.Stadlmann, M.Steck, K.Summerer, H.Weick, H.Wollnik

Progress in Mass Measurements of Stored Exotic Nuclei at Relativistic Energies

doi: 10.1016/S0375-9474(01)00533-4
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2001GE17      Nucl.Phys. A693, 19 (2001)

H.Geissel, H.Wollnik

Mass Measurements of Stored Exotic Nuclei

doi: 10.1016/S0375-9474(01)00346-3
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2001HA66      Hyperfine Interactions 132, 291 (2001)

M.Hausmann, J.Stadlmann, F.Attallah, K.Beckert, P.Beller, F.Bosch, H.Eickhoff, M.Falch, B.Franczak, B.Franzke, H.Geissel, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, Yu.A.Litvinov, K.E.G.Lobner, G.Munzenberg, N.Nankov, F.Nolden, Yu.N.Novikov, T.Ohtsubo, T.Radon, H.Schatz, C.Scheidenberger, M.Steck, Z.Sun, H.Weick, H.Wollnik

Isochronous Mass Measurements of Hot Exotic Nuclei

ATOMIC MASSES 68As, 70,71Se, 73Br; measured mass excess. Storage rings, comparison with previous results.

doi: 10.1023/A:1011911720453
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2001LI64      Hyperfine Interactions 132, 283 (2001)

Yu.A.Litvinov, F.Attallah, K.Beckert, F.Bosch, M.Falch, B.Franzke, H.Geissel, M.Hausmann, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.N.Novikov, Z.Patyk, W.Quint, T.Radon, C.Scheidenberger, M.Steck, L.Vermeeren, H.Wollnik

Schottky Mass Measurements of Cooled Exotic Nuclei

doi: 10.1023/A:1011907602706
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2001SC55      Hyperfine Interactions 132, 531 (2001)

C.Scheidenberger, F.Attallah, A.Casares, U.Czok, A.Dodonov, S.A.Eliseev, H.Geissel, M.Hausmann, A.Kholomeev, V.Kozlovski, Yu.A.Litvinov, M.Maier, G.Munzenberg, N.Nankov, Yu.N.Novikov, T.Radon, J.Stadlmann, H.Weick, M.Weidenmuller, H.Wollnik, Z.Zhou

A New Concept for Time-of-Flight Mass Spectrometry with Slowed-Down Short-Lived Isotopes

doi: 10.1023/A:1011959903557
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2001WO13      Hyperfine Interactions 132, 439 (2001)

H.Wollnik, A.Casares

The Use of Multi-Pass Time-of-Flight Mass Analyzers for Nuclear-Decay Spectroscopy of Mass Identified Nuclei

doi: 10.1023/A:1011914609492
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2000RA23      Nucl.Phys. A677, 75 (2000)

T.Radon, H.Geissel, G.Munzenberg, B.Franzke, Th.Kerscher, F.Nolden, Yu.N.Novikov, Z.Patyk, C.Scheidenberger, F.Attallah, K.Beckert, T.Beha, F.Bosch, H.Eickhoff, M.Falch, Y.Fujita, M.Hausmann, F.Herfurth, H.Irnich, H.C.Jung, O.Klepper, C.Kozhuharov, Yu.A.Litvinov, K.E.G.Lobner, F.Nickel, H.Reich, W.Schwab, B.Schlitt, M.Steck, K.Summerer, T.Winkler, H.Wollnik

Schottky Mass Measurements of Stored and Cooled Neutron-Deficient Projectile Fragments in the Element Range of 57 ≤ Z ≤ 84

ATOMIC MASSES 133La, 134Ce, 135,138Nd, 138Pm, 156Ho, 158Er, 158,160Tm, 160,161,162,164Yb, 162,163,164,166Lu, 164,165,166,167,168,170,171Hf, 167,168,169,170,171,173,175Ta, 170,171,172,173,174,175,176,177W, 172,173,174,175,176,177,178Re, 174,175,176,177,178,179,180,181Os, 177,178,179,180,181,183,184,185Ir, 178,179,180,181,182,183,184,185,187Pt, 181,182,183,184,185,187,188,189Au, 184,185,186,187,188,189,190,192Hg, 186,187,188,189,190,191,192,193,194,195Tl, 188,189,190,191,192,193,194,195,196,197,198Pb, 192,193,194,195,196,197,198Bi, 197,198,199,200,201,202Po; measured masses. Schottky mass spectrometry.

doi: 10.1016/S0375-9474(00)00304-3
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1999RA32      Pramana 53, 609 (1999)

T.Radon, H.Geissel, F.Attallah, K.Beckert, F.Bosch, A.Dolinsky, H.Eickhoff, M.Falch, B.Franczak, B.Franzke, Y.Fujita, M.Hausmann, M.Hellstrom, F.Herfurth, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, Yu.Litvinov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.Novikov, Z.Patyk, W.Quint, H.Reich, C.Scheidenberger, B.Schlitt, J.Stadlmann, M.Steck, K.Summerer, L.Vermeeren, M.Winkler, Th.Winkler, H.Wollnik

Mass Measurements of Relativistic Projectile Fragments in the Storage Ring ESR

ATOMIC MASSES Z=66-92; measured masses. Storage ring, Schottky spectroscopy.

doi: 10.1007/s12043-999-0038-3
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1999SC46      Acta Phys.Hung.N.S. 10, 177 (1999)

C.Scheidenberger, F.Attallah, K.Beckert, F.Bosch, H.Eickhoff, M.Falch, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, M.Hellstrom, F.Herfurth, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, Yu.A.Litvinov, K.E.G.Lobner, G.Munzenberg, F.Nolden, Yu.N.Novikov, Z.Patyk, W.Quint, T.Radon, H.Reich, H.Schatz, B.Schlitt, J.Stadlmann, M.Steck, K.Summerer, L.Vermeeren, H.Weick, M.Winkler, Th.Winkler, H.Wollnik

Mass Measurements of Relativistic Exotic Nuclei

ATOMIC MASSES 184,186,188,190,192Hg; measured masses. 179,180,181,183,185Ir, 181,182,183,184,185,187,188,189Au, 186,187,188,189,190,191,192,193,194,195Tl, 190,191,192,193,194,195,196Bi, 195,196,197,198,199,200At, 200,201,202,203,204Fr, 207,208Ac; measured masses; deduced one-proton separation energies. 189,191,192,194,198Pb, 190,192,194,195,196Bi, 196,198At, 202Fr; deduced proton-pairing energies. Schottky mass spectrometry, exotic nuclei from bismuth fragmentation.


1998BA87      Phys.Lett. 439B, 256 (1998)

T.Baumann, M.J.G.Borge, H.Geissel, H.Lenske, K.Markenroth, W.Schwab, M.H.Smedberg, T.Aumann, L.Axelsson, U.Bergmann, D.Cortina-Gil, L.Fraile, M.Hellstrom, M.Ivanov, N.Iwasa, R.Janik, B.Jonson, G.Munzenberg, F.Nickel, T.Nilsson, A.Ozawa, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, H.Simon, B.Sitar, P.Strmen, K.Summerer, T.Suzuki, M.Winkler, H.Wollnik, M.V.Zhukov

Longitudinal Momentum Distributions of 16, 18C Fragments After One-Neutron Removal from 17, 19C

NUCLEAR REACTIONS C(17C, n16C), (19C, n18C), E ≈ 910 MeV/nucleon; measured carbon fragments longitudinal momentum distributions. 17,19C deduced halo features. Secondary beams from 40Ar primary beam fragmentation.

doi: 10.1016/S0370-2693(98)01097-1
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1998GU16      Phys.Rev. A58, R1637 (1998)

R.Guckert, X.Zhao, S.G.Crane, A.Hime, W.A.Taylor, D.Tupa, D.J.Vieira, H.Wollnik

Magneto-Optical Trapping of Radioactive 82Rb Atoms

doi: 10.1103/PhysRevA.58.R1637
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1998SC09      Nucl.Phys. A630, 379c (1998)

C.Scheidenberger, K.Beckert, T.Beha, F.Bosch, H.Eickhoff, M.Falch, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, F.Herfurth, H.Irnich, H.C.Jung, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, G.Kraus, K.E.G.Lobner, G.Munzenberg, F.Nickel, F.Nolden, Yu.Novikov, Z.Patyk, T.Radon, H.Reich, B.Schlitt, W.Schwab, M.Steck, K.Summerer, H.Wollnik

Mass Measurements of Stored and Cooled Exotic Nuclei at GSI

NUCLEAR REACTIONS 9Be(209Bi, X), E=930 MeV/nucleon; measured proton-rich fragments masses, one-proton separation energies for Z=76-89. Pb deduced shell-correction energy vs mass number.

doi: 10.1016/S0375-9474(97)00775-6
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1997CI02      Nucl.Phys. A616, 69c (1997)

G.Ciavola, L.Calabretta, G.Cuttone, G.Di Bartolo, P.Finocchiaro, S.Gammino, M.Gu, E.Migneco, J.Qin, G.Raia, D.Rifuggiato, A.Rovelli, D.Vinciguerra, H.Wollnik

Recent Developments of EXCYT Project

doi: 10.1016/S0375-9474(97)00075-4
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1997KU05      Nucl.Phys. A616, 11c (1997)

S.Kubono, T.Nomura, S.Arai, Y.Arakaki, Y.Hashimoto, A.Imanishi, S.C.Jeong, I.Katayama, T.Katayama, H.Kawakami, H.Masuda, T.Miyachi, K.Niki, M.Okada, M.Oyaizu, Y.Shirakabe, P.Strasser, Y.Takeda, J.Tanaka, M.H.Tanaka, E.Tojyo, N.Tokuda, M.Tomizawa, M.Wada, K.Yoshida, M.Yoshizawa, M.Fujioka, S.Kato, T.Shinozuka, H.Wollnik

New ISOL-Based Radioactive Nuclear Beam Facility at INS

doi: 10.1016/S0375-9474(97)00069-9
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1997RA14      Phys.Rev.Lett. 78, 4701 (1997)

T.Radon, Th.Kerscher, B.Schlitt, K.Beckert, T.Beha, F.Bosch, H.Eickhoff, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, H.Irnich, H.C.Jung, O.Klepper, H.-J.Kluge, C.Kozhuharov, G.Kraus, K.E.G.Lobner, G.Munzenberg, Yu.Novikov, F.Nickel, F.Nolden, Z.Patyk, H.Reich, C.Scheidenberger, W.Schwab, M.Steck, K.Summerer, H.Wollnik

Schottky Mass Measurements of Cooled Proton-Rich Nuclei at the GSI Experimental Storage Ring

NUCLEAR REACTIONS 9Be(209Bi, X), E=930 MeV/nucleon; measured proton rich isotopes mass for Z=60-84. 192Pb, 189Tl, 193Bi, 180Os, 188Hg deduced mass. 184Pt deduced mass, mass excess.

doi: 10.1103/PhysRevLett.78.4701
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1997SC39      Nucl.Phys. A626, 315c (1997)

B.Schlitt, K.Beckert, F.Bosch, H.Eickhoff, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, H.Irnich, O.Klepper, H.-J.Kluge, C.Kozhuharov, G.Kraus, G.Munzenberg, F.Nickel, F.Nolden, Z.Patyk, T.Radon, H.Reich, C.Scheidenberger, W.Schwab, M.Steck, K.Summerer, Th.Winkler, T.Beha, M.Falch, Th.Kerscher, K.E.G.Lobner, H.C.Jung, H.Wollnik, Yu.Novikov

Schottky Mass Spectrometry at the ESR: A novel tool for precise direct mass measurements of exotic nuclei

NUCLEAR REACTIONS 9Be(197Au, X), E=900 MeV/nucleon; 9Be(209Bi, X), E=930 MeV/nucleon; measured proton rich isotopes mass for Z=67-83. Schottky mass spectrometry.

doi: 10.1016/S0375-9474(97)00552-6
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1997WO02      Nucl.Phys. A616, 346c (1997)

H.Wollnik, K.Beckert, T.Beha, F.Bosch, H.Eickhoff, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, H.Irnich, H.C.Jung, Th.Kerscher, O.Klepper, H.-J.Kluge, C.Kozhuharov, G.Kraus, K.E.G.Lobner, G.Munzenberg, F.Nickel, F.Nolden, Yu.Novikov, T.Radon, H.Reich, C.Scheidenberger, B.Schlitt, W.Schwab, A.Schwinn, M.Steck, K.Summerer

Direct Mass Measurements of Proton-Rich Nuclei in the Region from Tellurium to Polonium

NUCLEAR REACTIONS 9Be(209Bi, X), E=930 MeV/nucleon; measured fragments revolution frequencies in ESR; deduced mass of proton rich isotopes of Te-Po with mass 135-209.

doi: 10.1016/S0375-9474(97)00107-3
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1997WO11      Nucl.Phys. A626, 327c (1997)

H.Wollnik, K.Beckert, T.Beha, F.Bosch, A.Dolinsky, H.Eickhoff, M.Falch, B.Franzke, Y.Fujita, H.Geissel, M.Hausmann, Th.Horvath, H.Irnich, H.C.Jung, Th.Kerscher, O.Klepper, C.Kozhuharov, G.Kraus, K.E.G.Lobner, G.Munzenberg, F.Nickel, F.Nolden, Yu.Novikov, T.Radon, H.Reich, C.Scheidenberger, B.Schlitt, W.Schwab, A.Schwinn, M.Steck, K.Summerer, M.Theiss, T.Winkler

TOF-Mass-Measurements of Exotic Nuclei at the ESR of the GSI

doi: 10.1016/S0375-9474(97)00553-8
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1996SC22      Hyperfine Interactions 99, 117 (1996)

B.Schlitt, K.Beckert, T.Beha, H.Eickhoff, B.Franzke, H.Geissel, H.Irnich, H.C.Jung, T.F.Kerscher, O.Klepper, K.E.G.Lobner, G.Munzenberg, F.Nolden, Y.Novikov, T.Radon, H.Reich, A.Schwinn, M.Steck, K.Summerer, T.Winkler, H.Wollnik

Schottky Mass Spectrometry at the Heavy Ion Storage Ring ESR

NUCLEAR REACTIONS Ar(197Au, X)196Au/195Au/194Au/192Au/193Pt/192Pt/191Pt/187Pt/188Ir/187Ir/185Os, E=295 MeV/nucleon; measured broad-band Schottky spectra residuals from 197Au fragmentation. 187Pt deduced mass. Heavy ion storage ring.

doi: 10.1007/BF02274915
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1995IR01      Phys.Rev.Lett. 75, 4182 (1995)

H.Irnich, H.Geissel, F.Nolden, K.Beckert, F.Bosch, H.Eickhoff, B.Franzke, Y.Fujita, M.Hausmann, H.C.Jung, O.Klepper, C.Kozhuharov, G.Kraus, A.Magel, G.Munzenberg, F.Nickel, T.Radon, H.Reich, B.Schlitt, W.Schwab, M.Steck, K.Summerer, T.Suzuki, H.Wollnik

Half-Life Measurements of Bare, Mass-Resolved Isomers in a Storage-Cooler Ring

NUCLEAR REACTIONS 9Be(58Ni, X), E=360-380 MeV/nucleon; measured fragment frequency, Schottky spectra; deduced 52,53Fe, 53mFe, 52mMn decay features, T1/2. Secondary beams, fragment separator, storage-cooler ring.

RADIOACTIVITY 52,53Fe(β+); measured β+; 52mMn(IT), (β+), (EC); 53mFe(IT); measured β++γ branches; deduced T1/2. Sources from projectile fragmentation in 9Be(58Ni, X) reaction. Secondary beams, fragment separator, storage-cooler ring.

doi: 10.1103/PhysRevLett.75.4182
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1994MA67      Nucl.Instrum.Methods Phys.Res. B94, 548 (1994)

A.Magel, H.Geissel, B.Voss, P.Armbruster, T.Aumann, M.Bernas, B.Blank, T.Brohm, H.-G.Clerc, S.Czajkowski, H.Folger, A.Grewe, E.Hanelt, A.Heinz, H.Irnich, M.de Jong, A.Junghans, F.Nickel, M.Pfutzner, A.Piechaczek, C.Rohl, C.Scheidenberger, K.-H.Schmidt, W.Schwab, S.Steinhauser, K.Summerer, W.Trinder, H.Wollnik, G.Munzenberg

First Spatial Isotopic Separation of Relativistic Uranium Projectile Fragments

NUCLEAR REACTIONS Cu(238U, X), E=950 MeV/nucleon; measured fragment position distributions; deduced 236U separation, other characteristics of fragment separator.

doi: 10.1016/0168-583X(94)95436-4
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1994SE12      Z.Phys. A349, 25 (1994)

H.L.Seifert, J.M.Wouters, D.J.Vieira, H.Wollnik, X.G.Zhou, X.L.Tu, Z.Y.Zhou, G.W.Butler

Mass Measurement of Neutron-Rich Isotopes from 51Ca to 72Ni

NUCLEAR REACTIONS Th(p, F), E=800 MeV; measured fission fragment tof spectra, other features. 51Ca, 52,53,54Sc, 54,55,56Ti, 56,57,58,59,60V, 57,58,59,60,61,62Cr, 60,61,62,63,64,65Mn, 63,64,65,66,67Fe, 66,67,68,69Co, 67,68,69,70,71,72Ni deduced mass excess, two-neutron separation energies.

doi: 10.1007/BF01296329
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1992GE09      Nucl.Instrum.Methods Phys.Res. B70, 286 (1992)

H.Geissel, P.Armbruster, K.H.Behr, A.Brunle, K.Burkard, M.Chen, H.Folger, B.Franczak, H.Keller, O.Klepper, B.Langenbeck, F.Nickel, E.Pfeng, M.Pfutzner, E.Roeckl, K.Rykaczewski, I.Schall, D.Schardt, C.Scheidenberger, K.-H.Schmidt, A.Schroter, T.Schwab, K.Summerer, M.Weber, G.Munzenberg, T.Brohm, H.-G.Clerc, M.Fauerbach, J.-J.Gaimard, A.Grewe, E.Hanelt, B.Knodler, M.Steiner, B.Voss, J.Weckenmann, C.Ziegler, A.Magel, H.Wollnik, J.P.Dufour, Y.Fujita, D.J.Vieira, B.Sherrill

The GSI Projectile Fragment Separator (FRS): A versatile magnetic system for relativistic heavy ions

doi: 10.1016/0168-583X(92)95944-M
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1992PR03      Z.Phys. A342, 23 (1992)

M.Przewloka, A.Przewloka, P.Wachter, H.Wollnik

Measurements of β-Endpoint-Energies using a Magnetic Electron Separator

RADIOACTIVITY 90,91,92,93,94,95,96,97,98Rb [from fission]; measured β-endpoint energies; deduced Qβ, mass excess. Achromatic magnetic electron separator.

doi: 10.1007/BF01294483
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1992PR04      Z.Phys. A342, 27 (1992)

M.Przewloka, A.Przewloka, P.Wachter, H.Wollnik

New Qβ-Values of 139-146Cs

RADIOACTIVITY 139,140,141,142,143,144,145,146Cs; measured precise β-endpoint energies; deduced Qβ, mass excesses. Achromatic magnetic electron separator.

doi: 10.1007/BF01294484
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1990ST13      Z.Phys. A336, 369 (1990)

U.Stohlker, A.Blonnigen, W.Lippert, H.Wollnik

Q(β)-Measurements of Indium, Tin and Antimony Isotopes with Masses A = 128 and 130

RADIOACTIVITY 128,130In, 128,130Sn, 128,130Sb; measured Eβ, βγ-coin; deduced Qβ.


1986VI09      Phys.Rev.Lett. 57, 3253 (1986)

D.J.Vieira, J.M.Wouters, K.Vaziri, R.H.Kraus, Jr., H.Wollnik, G.W.Butler, F.K.Wohn, A.H.Wapstra

Direct Mass Measurements of Neutron-Rich Light Nuclei near N = 20

NUCLEAR REACTIONS 232Th(p, X), E=800 MeV; measured fragment mass to charge spectra. 19C, 20,21N, 23O, 23,24,25,26F, 27,28Ne, 28,29,30Na, 30,31,32Mg, 32,33,34Al, 36Si, 37P deduced mass excess, two-neutron separation energy vs neutron number. Recoil spectrometer.

doi: 10.1103/PhysRevLett.57.3253
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1985MU07      Z.Phys. A321, 515 (1985)

J.Munzel, B.Pfeiffer, U.Stohlker, G.Bewersdorf, H.Wollnik, H.Lawin, E.Monnand

Level Schemes of 100Y and 100Zr from the Beta-Decay of Mass Separated 100Sr

RADIOACTIVITY 100Sr(β-) [from fission product separation]; 100mY(β-) [from 100Sr β-decay]; measured Eγ, Iγ, γγ-coin; deduced Iβ, log ft. 100Y, 100Zr deduced levels, J, π, γ-branching.


1984BE50      Z.Phys. A319, 193 (1984)

K.Becker, G.Jung, K.-H.Kobras, H.Wollnik, B.Pfeiffer

Gamma-Gamma Angular Correlation Measurements of Transitions in 98Sr and 98Zr and Confirmation of Shape Coexistence in 98Sr

RADIOACTIVITY 98Rb(β-n) [from 235U(n, F), E=thermal]; 98Y(β-) [following 98Sr decay]; measured γγ(θ), γγ-coin. 98Sr, 98Zr deduced levels, J, π, γ-branching, δ, shape coexistence evidence.

doi: 10.1007/BF01415633
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1983FA03      Nucl.Instrum.Methods 206, 317 (1983)

R.Fass, P.Lemmertz, L.J.Alquist, H.Wollnik, D.Hirdes, H.Jungclas

On-Line Mass Determination of α-Active Products from the Reaction (nat)U + 208Pb with a Gas Jet Time-of-Flight Mass Spectrometer

NUCLEAR REACTIONS U, Ar(208Pb, αX)150Dy/151Dy/152Dy/151Ho/152Ho/152mHo/159Hf/155Yb/163W/159Ta/209At/207At/211At/217At/216At/215At/225Ac/192Bi/211Bi/212Bi/212mBi/218Po/217Po/216Po/211Po/211mPo/214Po/213Po/212Po/212mPo/221Fr/212Fr/211Fr/213Fr/219Fr/218Fr/226Th/225Th/223Th/213Ra/221Ra/224Ra/222Ra/214Ra/220Rn/217Rn/213Rn, E=7 MeV/nucleon; measured Eα, Iα, αγ-coin, α-recoil masses; deduced production σ ratios, masses for certain residuals. Gas jet Tof mass spectrometer, Ti window, Ar gas thermalization, natural U target.

doi: 10.1016/0167-5087(83)91275-9
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1983MU19      Z.Phys. A313, 247 (1983)

J.Munzel, B.Pfeiffer, H.Wollnik

Half-Lives of the Neutron-Rich Isotopes 100Sr, 100Y, 148Ba and 148La

RADIOACTIVITY 100Sr(β-); 100Y(β-) [from 100Sr(β-decay)]; 148Ba(β-); 148La(β-) [from 148Ba(β-decay)]; measured T1/2. On-line separation, γ-multispectra measurements.


1982DE08      Nucl.Instrum.Methods 192, 261 (1982)

R.Decker, K.-D.Wunsch, H.Wollnik, G.Jung, E.Koglin, G.Siegert

A Hyperpure Germanium Detector for Precise Beta Endpoint Energy Determinations

RADIOACTIVITY 28Al, 20F, 38Cl, 88Rb [from 27Al, 19F, 37Cl, 87Rb(d, p), E=1-6.5 MeV]; measured Eβ, βγ-coin, β-endpoint energies, Qβ. Hyperpure Ge detector, on-line separation.

doi: 10.1016/0029-554X(82)90831-X
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1982GA24      Z.Phys. A308, 359 (1982)

H.Gabelmann, J.Munzel, B.Pfeiffer, G.I.Crawford, H.Wollnik, K.-L.Kratz

P(n)-Values of Short-Lived Sr, Y, Ba and La Precursors

RADIOACTIVITY 97,98,99Sr(β-n) [from 97,98,99Rb(β-decay)]; 97,98,99Y(β-n); 147,148Ba(β-n) [from 147,148Cs(β--decay)]; 147,148La(β-n); measured neutron, β-spectra, T1/2; deduced β-delayed neutron emission probabilty.

doi: 10.1007/BF01415884
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1982KR11      Z.Phys. A306, 239 (1982)

K.-L.Kratz, A.Schroder, H.Ohm, M.Zendel, H.Gabelmann, W.Ziegert, P.Peuser, G.Jung, B.Pfeiffer, K.D.Wunsch, H.Wollnik, C.Ristori, J.Crancon

Beta-Delayed Neutron Emission from 93-100Rb to Excited States in the Residual Sr Isotopes.

RADIOACTIVITY 93,94,95,96,97,98,99,100Rb [from 235U(n, F)]; measured Eγ, Iγ, β-delayed nγ-, βγ-, γγ-coin; deduced β-strength function role. 92,93,94,95,96,97,98Sr levels deduced delayed neutron branching ratios.

doi: 10.1007/BF01415126
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1981DE25      Z.Phys. A301, 165 (1981)

R.Decker, K.D.Wunsch, H.Wollnik, G.Jung, J.Munzel, G.Siegert, E.Koglin

Prazise Qβ-Wert-Messungen mit einem Intrinsic-Germanium-Detektor an schweren, Neutronenreichen Spaltprodukten (Precise Q(β-) Values with an Intrinsic Germanium Detector for Heavy, Neutron-Rich Fission Products)

RADIOACTIVITY 138,139,140,141,142,143,144,145,146Cs, 139,141,143,146Ba, 146La [from on-line fission product separation]; measured βγ-coin, β-end point energies; deduced Qβ. Intrinsic Ge detector.

doi: 10.1007/BF01419247
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1981JU02      Nucl.Phys. A352, 1 (1981)

G.Jung, B.Pfeiffer, P.Hungerford, S.M.Scott, F.Schussler, E.Monnand, J.A.Pinston, L.J.Alquist, H.Wollnik, W.D.Hamilton

The Level Structure of 96Y from the Decay of 96Sr

RADIOACTIVITY 96Sr [from 235U(n, F)]; measured Eγ, Iγ, γγ-coin, γγ(θ); deduced log ft. 96Y deduced levels, J, π, γ-multipolarity, ICC. Mass-separated 96Rb activity, Si(Li) and Ge(Li) detectors.

doi: 10.1016/0375-9474(81)90554-6
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1981LU06      Z.Phys. A303, 115 (1981)

T.Lund, D.Hirdes, H.Jungclas, D.Molzahn, P.Vater, R.Brandt, P.Lemmertz, R.Fass, H.Wollnik, H.Gaggeler

Search for Production of Superheavy Elements via ' Fusion after Instantaneous Fission ' in the Reaction 238U + 208Pb

RADIOACTIVITY, Fission 254Cf(SF), 240,242m,244mAm(SF) [from 238U(208Pb, X), E=8 MeV/nucleon]; measured fragment distribution. Gas jet, fission track counting techniques.

NUCLEAR REACTIONS, Fission 238U(208Pb, X), E=8 MeV/nucleon; measured Eα, Iα, SF fragment distribution, α(fragment)-coin; deduced production yields for 240,242,244Cm, 254Cf, superheavy production σ. Radiochemical, gas jet, rotating wheel techniques, natural target.

doi: 10.1007/BF01420268
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1980AL08      Nucl.Phys. A338, 1 (1980)

L.J.Alquist, H.Wollnik, G.Jung, B.Pfeiffer, P.Hungerford, S.M.Scott, W.D.Hamilton

Gamma-Gamma Angular Correlations of Transitions in 92Sr

RADIOACTIVITY 92Rb; measured γγ(θ). 92Sr levels deduced J, π. Mass-separated 92Rb activity.

doi: 10.1016/0375-9474(80)90117-7
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1980DE02      Z.Phys. A294, 35 (1980)

R.Decker, K.D.Wunsch, H.Wollnik, E.Koglin, G.Siegert, G.Jung

Prazise Qβ-Wert-Messungen mit einem Intrinsic-Germanium Detektor an leichten, neutronenreichen Spaltprodukten

RADIOACTIVITY 88,89,90,91,92,93,94,95,96,97Rb, 91,94,96Sr, 94,95,96Y [from on-line fission product separation]; measured Eβ, βγ-coin; deduced Q(β). Intrinsic Ge detector.

doi: 10.1007/BF01473120
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1980EP02      Nucl.Phys. A340, 1 (1980)

M.Epherre, G.Audi, C.Thibault, R.Klapisch, G.Huber, F.Touchard, H.Wollnik

Direct Mass Measurements on Francium Isotopes and Deduced Masses for Odd-Z Neighbouring Elements

ATOMIC MASSES 204,205,206,207,208,209,210,212,224,225,226,227,228Fr; measured masses; deduced 209,210,211,212,213,214,216Ac, 215,216,217,218Pa, 200,201,202,203,204,205,206,208At, 196,197,198,199,200,201,202,204Bi, 197Tl masses. On-line mass spectrometry, comparison with current mass predictions.

doi: 10.1016/0375-9474(80)90319-X
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1980JU03      Phys.Rev. C22, 252 (1980)

G.Jung, B.Pfeiffer, L.J.Alquist, H.Wollnik, P.Hungerford, S.M.Scott, W.D.Hamilton

Gamma-Gamma Angular Correlations of Transitions in 94Sr and 96Sr

RADIOACTIVITY 94,96Rb; measured γγ(θ). 94,96Sr deduced levels, J, π. Mass-separation.

doi: 10.1103/PhysRevC.22.252
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1980LE27      Z.Phys. A298, 311 (1980)

P.Lemmertz, L.J.Alquist, R.Fass, H.Wollnik, D.Hirdes, H.Jungclas, R.Brandt, D.Schardt, J.Zylicz

Studies on Low Spin Yrast States in 212mPo

RADIOACTIVITY 212Bi [from U(208Pb, X), E=7 MeV/nucleon]; measured Eγ, Eα, αγ-coin; deduced log ft. 212Po deduced levels, T1/2, low-spin yrast band, configuration.

doi: 10.1007/BF01425163
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1979BA62      Phys.Rev. C20, 2244 (1979)

S.J.Balestrini, R.Decker, H.Wollnik, K.D.Wunsch, G.Jung, E.Koglin, G.Siegert

Independent Yields of Rb and Cs Isotopes from Thermal-Neutron Induced Fission of 235U

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured relative abundancies of Rb, Cs isotopes. 88,89,90,91,92,93,94,95,96,97Rb, 137,138,139,140,141,142,143,144,145,146Cs deduced independent, fractional yields. Rb, Cs deduced charge displacement, dispersion, enhancement factor. Even-odd Z effect model. Mass separator, fast neutron detector.

doi: 10.1103/PhysRevC.20.2244
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset21641.


1979EP01      Phys.Rev. C19, 1504 (1979)

M.Epherre, G.Audi, C.Thibault, R.Klapisch, G.Huber, F.Touchard, H.Wollnik

Direct Measurements of the Masses of Rubidium and Cesium Isotopes Far From Stability

NUCLEAR STRUCTURE 74,75,76,77,78,79,90,91,92,93,94,95,96,97,98,99Rb; 117,118,119,120,121,122,123,124,126,138,140,141,142,143,144,145,146,147Cs; measured masses; deduced two-neutron separation energies, evidence for deformation around N=60.

doi: 10.1103/PhysRevC.19.1504
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1978FA16      Nucl.Instrum.Methods 154, 233 (1978)

R.Fass, E.Georg, H.Wollnik, D.Schardt, G.Weiss, K.Wien, D.Hirdes

A Time-of-Flight Mass Spectrometer for Recoil Particles from α-Active Sources Produced by a He-JET

NUCLEAR REACTIONS Ge(84Kr, X), E=5.8 MeV/nucleon; measured α(fragment)-coin. 103Rh(84Kr, X), E not given; measured Eα, Iα; deduced evidence for 180,178,177,176Pt, 179,178,177Au. Recoil particles tof mass spectrometer.


1978JU03      Phys.Lett. 79B, 58 (1978)

H.Jungclas, D.Hirdes, R.Brandt, P.Lemmertz, E.Georg, H.Wollnik

Search for Superheavy Elements in the Interaction of 136Xe and 238U with (nat)U Using the Gas Jet Transport Technique

NUCLEAR REACTIONS U(136Xe, X), U(238U, X), E not given; measured σ for production of SF nuclides; deduced upper limits for production of superheavy elements. Gas jet collection.

doi: 10.1016/0370-2693(78)90435-5
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1978KO29      Z.Phys. A288, 319 (1978)

E.Koglin, G.Jung, G.Siegert, R.Decker, K.D.Wunsch, H.Wollnik

Half-Lives of the New Isotopes 100Rb, 100Sr, 145Cs and of 99Rb, 99Sr and 147Cs

RADIOACTIVITY 100Rb, 100Sr, 148Cs, 99Rb, 99Sr, 147Cs [from 235U+n]; measured activity build-up, decay with β-multi-scaling, γ-multispectra; deduced T1/2.

doi: 10.1007/BF01415200
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1978PF02      Z.Phys. A287, 191 (1978)

B.Pfeiffer, F.Schussler, J.Blachot, S.J.Feenstra, J.van Klinken, H.Lawin, E.Monnand, G.Sadler, H.Wollnik, K.D.Wunsch, and the JOSEF-LOHENGRIN-OSTIS-Collaboration

Nuclear Spectroscopy of Neutron-Rich A=145 Nuclei

RADIOACTIVITY 145Ba, 145La, 145Ce [from fission]; measured Eγ, Iγ, γγ-coin, βγ-coin, γX-ray(t), I(ce); deduced Qβ, log ft. 145La, 145Ce, 145Pr deduced levels, ICC, T1/2, J, π.

doi: 10.1007/BF01408089
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1978ST02      Z.Phys. A284, 95 (1978)

R.Stippler, F.Munnich, H.Schrader, J.P.Bocquet, M.Asghar, G.Siegert, R.Decker, B.Pfeiffer, H.Wollnik, E.Monnand, F.Schussler

Experimental Beta-Decay Energies of Short-Lived Light Fission Products

RADIOACTIVITY 88Br, 90,92Kr, 90,92,93Rb, 93,95,96,97,98Sr, 96,97,97m,98,98mY, 98,100,101,102Nb, 99,100Zr; measured Eβ; deduced Qβ.

doi: 10.1007/BF01433881
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1978ST03      Z.Phys. A285, 287 (1978)

R.Stippler, F.Munnich, H.Schrader, K.Hawerkamp, R.Decker, B.Pfeiffer, H.Wollnik, E.Monnand, F.Schussler

Total Beta-Decay Energies of Heavy Fission Products

RADIOACTIVITY 144,145Ba, 144,145,147La, 145,147,148Ce, 148Pr; measured Eβ; deduced Q.

doi: 10.1007/BF01408242
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1978WO09      Phys.Rev. C17, 2185 (1978)

F.K.Wohn, K.D.Wunsch, H.Wollnik, R.Decker, G.Jung, E.Koglin, G.Siegert

Identification of 147Cs and Half-Life Determinations for Cs and Ba Isotopes with A = 144-147 and Rb and Sr Isotopes with A = 96-98

RADIOACTIVITY 96,97,98Rb, 96,97,98Sr, 144,145,146,147Cs, 144,145,146,147Ba [from 235U(n, F)]; measured T1/2. Ge(Li), plastic scintillation detectors, mass separated activities.

doi: 10.1103/PhysRevC.17.2185
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1978WU04      Z.Phys. A288, 105 (1978)

K.D.Wunsch, R.Decker, H.Wollnik, J.Munzel, G.Siegert, G.Jung, E.Koglin

Precision Beta Endpoint Energy Measurements of Rubidium and Cesium Fission Products with an Intrinsic Ge-Detector

RADIOACTIVITY 88,89,90,91,92,93,94Rb, 138,139,140,141,142,143,144Cs; measured βγ-coin, Eβ; deduced Q.


1977PF01      J.Phys.(Paris) 38, 9 (1977)

B.Pfeiffer, J.P.Bocquet, J.A.Pinston, R.Roussille, M.Asghar, G.Bailleul, R.Decker, J.Greif, H.Schrader, G.Siegert, H.Wollnik, J.Blachot, E.Monnand, F.Schussler

Gamma Spectroscopy of Some Short-Lived Fission Products with the Isotope Separator Lohengrin

RADIOACTIVITY 100Y, 100Zr, 149,150Ce, 150Pr, 136Te, 87Se; measured Eγ, Iγ, T1/2. 149Pr, 135,137Te, 86Se; measured Eγ, Iγ. 88Se; measured Eγ, Iγ; deduced ground state β-branching. 85Se; measured Eγ, Iγ, T1/2; deduced ground state β-branching.

doi: 10.1051/jphys:019770038010900
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1977WO06      Nucl.Instrum.Methods 144, 565 (1977)

H.Wollnik, B.Pfeiffer, J.P.Bocquet, F.Schussler, The LOHENGRIN Collaboration

The Use of a Many-Capillary Gas Jet System for Nuclear Spectroscopic Measurements at a Recoil Fission Product Separator

RADIOACTIVITY 96Y, 96Sr, 136Te, 136I; measured γ-spectra.

doi: 10.1016/0029-554X(77)90025-8
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1977WO07      Nucl.Phys. A291, 355 (1977)

H.Wollnik, F.K.Wohn, K.D.Wunsch, G.Jung

Experimental Indication of the Onset of Nuclear Deformation in Neutron-Rich Sr Isotopes at Mass 98

RADIOACTIVITY 98Rb [from 235U(n, fission)]; measured Eγ, Iγ. 98Sr deduced levels. Mass-separated Rb activity.

doi: 10.1016/0375-9474(77)90325-6
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1976SI18      Phys.Rev. C14, 1864 (1976)

G.Siegert, H.Wollnik, J.Greif, R.Decker, G.Fiedler, B.Pfeiffer

Nuclear Charge Distribution of Fission Products from 235U(n(th), f) of the Masses 79 to 100

NUCLEAR REACTIONS 235U(n, F), E=th; measured σ(A, Z); deduced proton, neutron odd-even effect.

doi: 10.1103/PhysRevC.14.1864
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset21605.


1975GU03      Nucl.Phys. A242, 56 (1975)

H.Gunther, G.Siegert, K.Wunsch, H.Wollnik

Gamma-Ray Energies of Short-Lived Rb, Sr, and Y Isotopes Indicating Delayed Neutron Emission to Excited States

RADIOACTIVITY 95,96,97Rb, 95,96,97Sr, 95,97Y; measured Eγ, Iγ, βγ-coin. 96,97Sr, 95,97Y, 96,97Zr deduced transitions. 95Sr, 96Y deduced levels. 96,97Sr deduced delayed-neutron decay probability. On-line mass separator.

doi: 10.1016/0375-9474(75)90033-0
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1975SI04      Phys.Rev.Lett. 34, 1034 (1975)

G.Siegert, J.Greif, H.Wollnik, G.Fiedler, R.Decker, M.Asghar, G.Bailleul, J.P.Bocquet, J.P.Gautheron, H.Schrader, P.Armbruster, H.Ewald

Nuclear Charge Distributions in the Isobars 92 to 100 Resulting from Thermal Neutron Fission of Uranium-235

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured fractional yields; deduced nuclear charge distribution in isobars A=92-100.

doi: 10.1103/PhysRevLett.34.1034
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset21562.


1974SI23      Phys.Lett. 53B, 45 (1974)

G.Siegert, H.Wollnik, J.Greif, G.Fiedler, M.Asghar, G.Bailleul, J.P.Bocquet, J.P.Gautheron, H.Schrader, H.Ewald, P.Armbruster

Direct Determination of the Nuclear Charge Distribution of Mass Separated Fission Products from 235U(n(th), f)

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured charge distribution of A=90-91 isobaric chains.

doi: 10.1016/0370-2693(74)90339-6
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset21594.


1974WU02      Phys.Rev. C10, 2523 (1974)

K.Wunsch, H.Wollnik, G.Siegert

Qβ Values of Neutron-Rich Cs Isotopes

RADIOACTIVITY 141,142,143,144,145Cs [from 235U(n, F)]; measured Eβ; deduced Eβ max, Qβ. Mass separated Cs activities.

doi: 10.1103/PhysRevC.10.2523
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1973WU03      J.Phys.(London) A6, L93 (1973)

K.Wunsch, H.Gunther, G.Siegert, H.Wollnik

Gamma Ray Energies of 143-145Cs and of their Beta Decay Products

RADIOACTIVITY 143,144,145Cs, Ba, 144La [from 235U(n, F)]; measured Eγ, Iγ, βγ-coin, T1/2.

doi: 10.1088/0305-4470/6/7/005
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1971TA17      Nucl.Phys. A173, 465 (1971)

B.Tamain, B.Pfeiffer, H.Wollnik, E.Konecny

Search for Bremsstrahlung-Induced Fission Isomers of 238U and 239Pu

RADIOACTIVITY, Fission 238U, 239Pu(SF); measured T1/2.

NUCLEAR REACTIONS, Fission 238U, 239Pu(γ, F), E < 53 MeV; measured (γ)(fragment)-delay. 238U, 239Pu deduced fission isomers, T1/2.

doi: 10.1016/0375-9474(71)90964-X
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