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NSR database version of April 29, 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 T_1/2. Different separation techniques.

doi: 10.1103/PhysRevLett.54.406
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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 T_1/2; deduced SF(T_1/2) limit, branching ratio. ²⁵⁶Rf(SF) [from ²⁶⁰Sg(α-decay)]; measured T_1/2. ²⁶⁰Sg, ²⁵⁶Rf deduced mass excess.

doi: 10.1016/0375-9474(86)90615-9
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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, T_1/2, 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 T_1/2, 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 T_1/2.

doi: 10.1007/BF01412274
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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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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,244m}Am(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, T_1/2, 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
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 ^{172,171,170,169}Ir, ^168,167,166Re, ^{171,170,169,168}Os; measured Eα, T_1/2; deduced α-branching.

doi: 10.1007/BF01408649
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Note: The following list of authors and aliases matches the search parameter P.Lemmertz: , P.K.LEMMERTZ