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NSR database version of May 24, 2024.

Search: Author = D.Hirdes

Found 6 matches.

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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


1978SC26      Z.Phys. A288, 189 (1978)

U.J.Schrewe, W.-D.Schmidt-Ott, R.-D.v.Dincklage, E.Georg, P.Lemmertz, H.Jungclas, D.Hirdes

Evidence of New Isotopes: 169,170Ir, 166,167,168Re

RADIOACTIVITY 172,171,170,169Ir, 168,167,166Re, 171,170,169,168Os; measured Eα, T1/2; deduced α-branching.

doi: 10.1007/BF01408649
Citations: PlumX Metrics


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