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NSR database version of May 30, 2024.

Search: Author = P.Lemmertz

Found 12 matches.

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1988GH01      Nucl.Instrum.Methods Phys.Res. A269, 192 (1988)

A.Ghiorso, S.Yashita, M.E.Leino, L.Frank, J.Kalnins, P.Armbruster, J.-P.Dufour, P.K.Lemmertz

SASSY, a Gas-Filled Magnetic Separator for the Study of Fusion Reaction Products

NUCLEAR REACTIONS 208Pb(48Ca, 2n), E ≈ 205-220 MeV; measured σ(E), Eα, Iα. Gas filled magnetic separator.

doi: 10.1016/0168-9002(88)90877-7
Citations: PlumX Metrics


1986TO12      Phys.Lett. 178B, 150 (1986)

K.S.Toth, Y.A.Ellis-Akovali, J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, D.M.Moltz, F.T.Avignone III

Structure in β-Delayed Proton Spectra of N = 81 Precursors

RADIOACTIVITY 151Yb(β+p) [from 96Ru(58Ni, n2p), E=360 MeV]; measured β-delayed Ep, Ip, β+p-, pγ-, p(X-ray)-coin. 150Er deduced levels, J, π, proton branching. Ge, Si detectors, plastic scintillator, on-line separator.

doi: 10.1016/0370-2693(86)91486-3
Citations: PlumX Metrics


1985AR02      Phys.Rev.Lett. 54, 406 (1985)

P.Armbruster, Y.K.Agarwal, W.Bruchle, M.Brugger, J.P.Dufour, H.Gaggeler, F.P.Hessberger, S.Hofmann, P.Lemmertz, G.Munzenberg, K.Poppensieker, W.Reisdorf, M.Schadel, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, D.Vermeulen, G.Wirth, A.Ghiorso, K.E.Gregorich, D.Lee, M.Leino, K.J.Moody, G.T.Seaborg, R.B.Welch, P.Wilmarth, S.Yashita, C.Frink, N.Greulich, G.Herrmann, U.Hickmann, N.Hildebrand, J.V.Kratz, N.Trautmann, M.M.Fowler, D.C.Hoffman, W.R.Daniels, H.R.von Gunten, H.Dornhofer

Attempts to Produce Superheavy Elements by Fusion of 48Ca with 248Cm in the Bombarding Energy Range of 4.5-5.2 MeV/u

NUCLEAR REACTIONS 248Cm(48Ca, X), E=4.5-5.2 MeV/nucleon; measured superheavy production σ upper limits vs T1/2. Different separation techniques.

doi: 10.1103/PhysRevLett.54.406
Citations: PlumX Metrics


1985HO29      Nucl.Phys. A447, 335c (1985)

S.Hofmann, P.Armbruster, G.Munzenberg, W.Reisdorf, K.-H.Schmidt, H.G.Burkhard, F.P.Hessberger, H.-J.Schott, Y.K.Agarwal, G.Berthes, U.Gollerthan, H.Folger, R.Hingmann, J.G.Keller, M.E.Leino, P.Lemmertz, M.Montoya, K.Poppensieker, B.Quint, I.Zychor

The Influence of the Surprising Decay Properties of Element 108 on Search Experiments for New Elements

RADIOACTIVITY 260Sg(α) [from 208Pb(54Cr, 2n), E=4.92 MeV/nucleon]; measured T1/2; deduced SF(T1/2) limit, branching ratio. 256Rf(SF) [from 260Sg(α-decay)]; measured T1/2. 260Sg, 256Rf deduced mass excess.

doi: 10.1016/0375-9474(86)90615-9
Citations: PlumX Metrics


1985TO11      Phys.Rev. C32, 342 (1985)

K.S.Toth, Y.A.Ellis-Akovali, F.T.Avignone III, R.S.Moore, D.M.Moltz, J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, D.C.Sousa, A.L.Goodman

Single-Particle States in 149Er and 149Ho, and the Effect of the Z = 64 Closure

NUCLEAR STRUCTURE 133Sb, 135I, 137Cs, 139La, 141Pr, 143Pm, 145Eu, 147Tb, 149Ho, 131Sn, 133Te, 137Ba, 139Ce, 141Nd, 143Sm, 145Gd, 147Dy, 149Er; calculated single particle states. Hartree-Fock method.

RADIOACTIVITY 149Er(β+), (EC), 149mEr [from 144Sm(12C, 7n), E=135 MeV]; measured Eγ, Iγ, γγ-coin, T1/2, β-delayed Ep, Ip. 149Er deduced levels, J, π, ICC. 149Ho deduced levels, J, π. Mass separation.

doi: 10.1103/PhysRevC.32.342
Citations: PlumX Metrics


1985WI07      Z.Phys. A321, 179 (1985)

P.A.Wilmarth, J.M.Nitschke, P.K.Lemmertz, R.B.Firestone

Beta-Delayed Proton Precursors with 59 ≤ Z ≤ 62

NUCLEAR REACTIONS 92Mo(40Ca, np), (40Ca, n2p), (40Ca, n3p), E=170 MeV; 96Ru(40Ca, n3p), (40Ca, n2p), E=175 MeV; measured Eγ, Iγ, E X-ray, I X-ray, p(X-ray); deduced β-delayed proton emitters 128Pr, 130,132Pm, 129Nd, 133Sm.

RADIOACTIVITY 128Pr, 130,132Pm, 129Nd, 133Sm(β+p) [from 92Mo, 96Ru(40Ca, xnyp), E=170, 175 MeV]; measured β-delayed p(X-ray), Eγ, Iγ, E X-ray, I X-ray; deduced T1/2, average Ep, E(K X-ray), Eγ.

doi: 10.1007/BF01411963
Citations: PlumX Metrics


1984NI03      Z.Phys. A316, 249 (1984)

J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, W.-D.Zeitz, J.A.Honkanen

Beta-Delayed Proton Emission Observed in New Lanthanide Isotopes

RADIOACTIVITY 143,141Dy(β+p) [from 92Mo(56Fe, αn), (54Fe, αn), E=275, 274 MeV]; 141Gd(β+p) [from 92Mo(54Fe, n4p), E=274 MeV]; 123Ce(β+p) [from 92Mo(36Ar, nα), E=196 MeV]; 122La(β+p) [from 92Mo(36Ar, npα), E=205 MeV]; 120La(β+p) [from 58Ni(64Zn, np), E=253 MeV]; measured β-delayed Ep, Ip, γp-, X-ray p-coin; deduced T1/2.

doi: 10.1007/BF01412274
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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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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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Note: The following list of authors and aliases matches the search parameter P.Lemmertz: , P.K.LEMMERTZ