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Search: Author = M.A.Hotchkis

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1999BO24      Eur.Phys.J. A 5, 235 (1999)

R.Bonetti, A.Guglielmetti, G.Poli, E.Sacchi, D.Fink, M.A.C.Hotchkis, G.E.Jacobsen, E.M.Lawson, Q.Hua, A.M.Smith, C.Tuniz

¹⁴C in Uranium and Thorium Minerals: A signature of cluster radioactivity ?

doi: 10.1007/s100500050279
Citations: PlumX Metrics

1996SM11      Nucl.Instrum.Methods Phys.Res. A382, 309 (1996)

A.M.Smith, D.Fink, M.A.C.Hotchkis, G.E.Jacobsen, E.M.Lawson, C.Tuniz, E.Sacchi, D.Louvat, G.M.Zuppi, R.Bonetti

Recent Developments at the ANTARES AMS Centre

doi: 10.1016/S0168-9002(96)00403-2
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1993CI01      Phys.Rev. C47, 1294 (1993)

J.A.Cizewski, M.A.C.Hotchkis, J.L.Durell, J.Copnell, A.S.Mowbray, J.Fitzgerald, W.R.Phillips, I.Ahmad, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, E.F.Moore, L.R.Morss, Ph.Benet, D.Ye

New N = 84 Isotone: ¹³⁶Te

RADIOACTIVITY ²⁴⁸Cm(SF); measured γγ-coin. ²⁵²Cf(SF); measured Eγ, Iγ. ¹³⁶Te deduced levels, J, π, transitions.

doi: 10.1103/PhysRevC.47.1294
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1993FR01      Nucl.Phys. A552, 10 (1993)

S.J.Freeman, R.Chapman, J.L.Durell, M.A.C.Hotchkis, F.Khazaie, J.C.Lisle, J.N.Mo, A.M.Bruce, R.A.Cunningham, P.V.Drumm, D.D.Warner

Two-Quasiproton Structures in Ytterbium-174

NUCLEAR REACTIONS ¹⁷⁵Lu(t, α), E=35.5 MeV; measured absolute σ(θ). ¹⁷⁴Yb deduced levels, L, J, π, K, M1 transition strengths distributions. Natural targets.

doi: 10.1016/0375-9474(93)90328-U
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1993FR04      Nucl.Phys. A554, 333 (1993)

S.J.Freeman, R.Chapman, J.L.Durell, M.A.C.Hotchkis, F.Khazaie, J.C.Lisle, J.N.Mo, A.M.Bruce, R.A.Cunningham, P.V.Drumm, D.D.Warner, J.D.Garrett

Two-Quasiproton Configurations in Dysprosium-164

NUCLEAR REACTIONS ¹⁶⁵Ho(t, α), E=37.3 MeV; measured σ(θ). ¹⁶⁴Dy deduced levels, transferred proton L, Nilsson assignments, J, π, K, configuration strengths. Natural targets.

doi: 10.1016/0375-9474(93)90225-M
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1993MC03      Z.Phys. A344, 369 (1993)

J.H.McNeill, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods, J.Blomqvist

Isomeric Decay Studies using a Recoil Mass Separator. Exotic N = 82 and 83 Nuclei ¹⁵³Yb, ¹⁵³Lu, ¹⁵⁴Lu and ¹⁵⁴Hf

NUCLEAR REACTIONS ¹⁰²Pd(⁵⁴Fe, X), E=245 MeV; measured γ(recoil)-, γγ-coin. ¹⁵³Yb, ^153,154Lu deduced isomer decay, levels, J, π, B(λ), transition Iγ, configuration. ¹⁵⁴Hf deduced levels, J, π, configuration.

doi: 10.1007/BF01283192
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1992SE05      Nucl.Instrum.Methods Phys.Res. A311, 217 (1992)

P.J.Sellin, P.J.Woods, D.Branford, T.Davinson, N.J.Davis, D.G.Ireland, K.Livingston, R.D.Page, A.C.Shotter, S.Hofmann, R.A.Hunt, A.N.James, M.A.C.Hotchkis, M.A.Freer, S.L.Thomas

A Double-Sided Silicon Strip Detector System for Proton Radioactivity Studies

NUCLEAR REACTIONS ⁵⁴Fe, ⁹²Mo(⁵⁸Ni, X), E not given; measured fragment decay vs residue mass, Eα, Iα, Ep, Ip; deduced ¹⁴⁷Tm, ¹⁰⁹I proton-decay.

RADIOACTIVITY ¹⁰⁹I(p) [from ⁵⁶Fe(⁵⁸Ni, X), E not given]; ¹⁰⁸Te(α) [from ¹⁰⁹I(proton-decay)]; measured proton, α-spectra; deduced decay sequence. Fusion, evaporation product velocity, mass separation, recoil separator.

doi: 10.1016/0168-9002(92)90867-4
Citations: PlumX Metrics

1991HO16      Nucl.Phys. A530, 111 (1991)

M.A.C.Hotchkis, J.L.Durell, J.B.Fitzgerald, A.S.Mowbray, W.R.Phillips, I.Ahmad, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, E.F.Moore, L.R.Morss, Ph.Benet, D.Ye

Rotational Bands in the Mass 100 Region

RADIOACTIVITY ²⁴⁸Cm(SF); measured Eγ, γγ-coin. ^98,99,100Sr, ^99,101Y, ^{100,101,102,103,104}Zr, ^101,103,105Nb, ^{102,103,104,105,106,107,108}Mo deduced levels.

doi: 10.1016/0375-9474(91)90758-X
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1991PA05      Z.Phys. A338, 295 (1991)

R.D.Page, P.J.Woods, S.J.Bennett, M.Freer, B.R.Fulton, R.A.Cunningham, J.Groves, M.A.C.Hotchkis, A.N.James

Evidence for the Alpha Decay of ¹⁰⁸I

NUCLEAR REACTIONS ⁵⁴Fe(⁵⁸Ni, X), E=260 MeV; ⁵⁰Cr(⁵⁸Ni, X), E=230 MeV; measured decay particle energy spectra. ¹⁰⁸I deduced possible α-decay evidence, no proton decay branch. ¹⁰⁵Te deduced no α-decay. Recoil implantation detection system.

doi: 10.1007/BF01288193
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1991SE01      Z.Phys. A338, 245 (1991)

P.J.Sellin, P.J.Woods, R.D.Page, S.J.Bennett, R.A.Cunningham, M.Freer, B.R.Fulton, M.A.C.Hotchkis, A.N.James

The Limit of Stability of Proton-Rich Thallium Isotopes: A search for the decay of ¹⁷⁷Tl

NUCLEAR REACTIONS ¹⁰⁶Cd(⁷⁴Se, X), E=340 MeV; measured evaporation residues velocity, mass, α-spectra; deduced no evidence for ¹⁷⁷Tl.

RADIOACTIVITY ^177,178Hg, ¹⁷⁷Au(α) [from ¹⁰⁶Cd(⁷⁴Se, X), E=340 MeV]; measured Eα, Iα, T_1/2; deduced no evidence for ¹⁷⁷Tl. ^165,166Os measured T_1/2.

doi: 10.1007/BF01284803
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1990HO12      Phys.Rev.Lett. 64, 3123 (1990)

M.A.C.Hotchkis, J.L.Durell, J.B.Fitzgerald, A.S.Mowbray, W.R.Phillips, I.Ahmad, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, E.F.Moore, L.R.Morss, Ph.Benet, D.Ye

New Neutron-Rich Nuclei ^103,104Zr and the A ≈ 100 Region of Deformation

RADIOACTIVITY ²⁵²Cf(SF); measured prompt Eγ, Iγ. ^{100,101,102,103,104}Zr deduced levels, possible J, π, configuration.

doi: 10.1103/PhysRevLett.64.3123
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1990MC02      Z.Phys. A335, 241 (1990)

J.H.McNeill, J.Blomqvist, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods

A 35 μs Isomer in the Exotic N = 83 Nucleus ¹⁵⁴Lu

NUCLEAR REACTIONS ¹⁰²Pd(⁵⁴Fe, X), E=245 MeV; measured γγ-coin. ¹⁵⁴Lu deduced isomer T_1/2, decay features, levels, J, π, configuration, B(λ).

1990MO18      Phys.Rev. C42, 1126 (1990)

A.S.Mowbray, I.Ahmad, Ph.Benet, R.F.Casten, M.P.Carpenter, J.L.Durell, J.B.Fitzgerald, M.A.C.Hotchkis, R.V.F.Janssens, T.L.Khoo, E.F.Moore, L.R.Morss, W.R.Phillips, W.Walters, D.Ye

New Nucleus ¹⁴²Xe: Test of the N(p)N(n) scheme

RADIOACTIVITY ²⁴⁸Cm(SF); measured fragment decay γγ-coin. ¹⁴²Xe deduced levels, J, π. Model NpNn scheme comparison.

doi: 10.1103/PhysRevC.42.1126
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1989DR03      Nucl.Phys. A496, 530 (1989)

P.V.Drumm, L.K.Fifield, R.A.Bark, M.A.C.Hotchkis, C.L.Woods

The ⁴⁰Ar(¹³C, ¹⁴O)³⁹S Reaction and the Ground-State Mass of ³⁹S

NUCLEAR REACTIONS ⁴⁰Ar(¹³C, ¹⁴O), (¹³C, ¹⁵O), (¹³C, ¹²C), E=96 MeV; measured σ(E(¹⁴O)), σ(E(¹⁵O)), σ(E(¹²C)); deduced reaction mechanism, Q. ³⁹S deduced mass excess, excited state. DWBA calculations. Gas target.

doi: 10.1016/0375-9474(89)90075-4
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1989FR06      Phys.Lett. 222B, 347 (1989)

S.J.Freeman, R.Chapman, J.L.Durell, M.A.C.Hotchkis, F.Khazaie, J.C.Lisle, J.N.Mo, A.M.Bruce, R.A.Cunningham, P.V.Drumm, D.D.Warner, J.D.Garrett

The Microscopic Structure of the M1 Mode in ¹⁶⁴Dy

NUCLEAR REACTIONS ¹⁶⁵Ho(t, α), E=37.3 MeV; measured σ(Eα), yield vs θ. ¹⁶⁴Dy deduced levels, J, π, K, M1 transition features.

doi: 10.1016/0370-2693(89)90321-3
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1989MC01      Z.Phys. A332, 105 (1989)

J.H.McNeill, A.A.Chishti, P.J.Daly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley

A 15 μs Isomer in the Z = 70 N = 83 Nucleus ¹⁵³Yb

NUCLEAR REACTIONS ¹⁰²Pd(⁵⁴Fe, X), E=245 MeV; measured Eγ, Iγ, γγ-, γ(X-ray)-coin. ¹⁵³Yb deduced isomer, T_1/2, J, π, configuration. Fusion-evaporation recoil product mass analysis.

1989MC07      Phys.Rev.Lett. 63, 860 (1989)

J.H.McNeill, J.Blomqvist, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods

Exotic N = 82 Nuclei ¹⁵³Lu and ¹⁵⁴Hf and Filling of the πh_11/2 Subshell

NUCLEAR REACTIONS ¹⁰²Pd(⁵⁴Fe, 2n), (⁵⁴Fe, np), (⁵⁴Fe, 2np), (⁵⁴Fe, n2p), E=235, 245 MeV; measured relative isomeric yields; calculated residual production σ. γ-ray spectroscopy.

RADIOACTIVITY ^153mLu, ^154mHf [from ¹⁰²Pd(⁵⁴Fe, xnyp), E=235, 245 MeV]; measured γγ-, γ(X-ray)-coin; deduced isomer T_1/2, configuration, decay scheme, level J, π, B(λ).

doi: 10.1103/PhysRevLett.63.860
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1989OR03      Nucl.Phys. A491, 443 (1989)

N.A.Orr, W.N.Catford, L.K.Fifield, M.A.C.Hotchkis, T.R.Ophel, D.C.Weisser, C.L.Woods

Observations of ²⁰N via the Heavy-Ion Transfer Reaction ⁴⁸Ca(¹⁸O, ²⁰N)⁴⁶Sc

NUCLEAR REACTIONS ⁴⁸Ca(¹⁸O, ²⁰N), E=108-119 MeV; measured Q, σ(E(²⁰N)). ²⁰N deduced mass excess.

doi: 10.1016/0375-9474(89)90578-2
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1989RE02      Nucl.Instrum.Methods Phys.Res. A276, 228 (1989)

J.E.Reiff, M.A.C.Hotchkis, D.M.Moltz, T.F.Lang, J.D.Robertson, J.Cerny

A Fast In-Beam Recoil Catcher Wheel and the Observation of Beta-Delayed Two-Proton Emission from ³¹Ar

NUCLEAR REACTIONS Mg(³He, X), E=110, 135 MeV; measured β-delayed proton spectra for ¹⁷Ne, ²¹Mg, ²⁵Si, ²²Al, ³¹Ar. Fast in-beam recoil catcher foil wheel.

RADIOACTIVITY ¹⁷Ne, ²¹Mg, ²⁵Si(β⁺p) [from Mg(³He, X), E=110 MeV]; measured β-delayed proton spectra. ²²Al, ³¹Ar(β⁺p) [from Mg(³He, X), E=135 MeV]; measured β-delayed two-proton spectra. ³¹Ar deduced Q(EC), mass excess, possible T_1/2, decay systematics. ³¹Cl deduced IAS energy, possible decay systematics.

doi: 10.1016/0168-9002(89)90637-2
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1989WO02      Nucl.Instrum.Methods Phys.Res. A276, 195 (1989)

P.J.Woods, S.J.Bennett, M.Freer, B.R.Fulton, R.D.Page, K.A.Connell, R.A.Cunningham, J.Groves, J.Simpson, A.N.James, M.A.C.Hotchkis, W.D.M.Rae

A Detection System for the Study of Alpha and Proton Radioactivity on the Daresbury Recoil Mass Separator

NUCLEAR REACTIONS ¹¹⁰Cd(⁵⁸Ni, X), E=260 MeV; measured E(α), I(α) following evaporation residue decay. ¹⁵³Tm, ^161,162W, ^158,157Hf, ¹⁵⁴Yb deduced α-branching ratio. Position sensitive silcon surface barrier detector.

doi: 10.1016/0168-9002(89)90632-3
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1987BL14      Nucl.Instrum.Methods Phys.Res. B26, 328 (1987)

F.B.Blonnigen, D.M.Moltz, T.F.Lang, W.F.Knoll, X.Xu, M.A.C.Hotchkis, J.E.Reiff, J.Cerny

Improvements to the Helium-Jet Coupled On-Line Mass Separator RAMA

NUCLEAR REACTIONS ¹⁴²Nd(¹⁶O, xn)¹⁵³Er, E=120 MeV; measured Eα, Iα. Improved on-line mass separator.

doi: 10.1016/0168-583X(87)90772-5
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1987HO01      Phys.Rev. C35, 315 (1987)

M.A.C.Hotchkis, J.E.Reiff, D.J.Vieira, F.Blonnigen, T.F.Lang, D.M.Moltz, X.Xu, J.Cerny

Beta-Delayed Proton Decay of ⁶¹Ge

RADIOACTIVITY ⁶¹Ge(β⁺p) [from ⁴⁰Ca(²⁴Mg, 3n), (²⁸Si, α3n), E=73-128 MeV]; measured β-delayed Ep, T_1/2. ⁶¹Ga deduced levels, possible J, π. ΔE-E telescopes.

doi: 10.1103/PhysRevC.35.315
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1985DR06      Nucl.Phys. A441, 95 (1985)

P.V.Drumm, L.K.Fifield, R.A.Bark, M.A.C.Hotchkis, C.L.Woods, P.Maier-Komor

Ground-State Mass Excesses and Low-Lying Levels of the Neutron-Rich Nuclei ³⁶P, ³⁵P and ³⁴P

NUCLEAR REACTIONS ^36,34S(⁷Li, ⁷Be), ³⁶S(⁶Li, ⁷Be), E=52 MeV; ^36,34S(¹¹B, ¹¹C), E=83 MeV; measured σ(E(⁷Be)), σ(E(¹¹C)). ^36,35,34P deduced mass excess, levels. Enriched targets.

doi: 10.1016/0375-9474(85)90169-1
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1985FI03      Nucl.Phys. A440, 531 (1985)

L.K.Fifield, C.L.Woods, R.A.Bark, P.V.Drumm, M.A.C.Hotchkis

Masses and Level Schemes of ³³Si and ³⁴Si

NUCLEAR REACTIONS ³⁶S(¹¹B, ¹³N), (¹¹B, ¹⁴N), E=83 MeV; measured σ(E(¹³N)), σ(E(¹⁴N)). ^33,34Si deduced ground-state mass excesses, levels. Enriched targets.

doi: 10.1016/0375-9474(85)90244-1
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1985FI08      Nucl.Phys. A437, 141 (1985)

L.K.Fifield, P.V.Drumm, M.A.C.Hotchkis, T.R.Ophel, C.L.Woods

The ²⁶Mg(¹⁸O, ¹⁷F)²⁷Na and ²⁶Mg(¹⁸O, ¹⁵O)²⁹Mg Reactions and the Level Schemes of ²⁷Na and ²⁹Mg

NUCLEAR REACTIONS ²⁶Mg(¹⁸O, ¹⁷F), (¹⁸O, ¹⁵O), E=100-117 MeV; measured σ(E(¹⁷F)), σ(E(¹⁵O)). ²⁷Na, ²⁹Mg deduced levels, ground state mass excesses. Enriched targets.

doi: 10.1016/0375-9474(85)90230-1
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1985WO04      Nucl.Phys. A437, 454 (1985)

C.L.Woods, L.K.Fifield, R.A.Bark, P.V.Drumm, M.A.C.Hotchkis

A Study of ²⁵Ne via the ²⁶Mg(¹³C, ¹⁴O)²⁵Ne Reactions

NUCLEAR REACTIONS ^24,26Mg(¹³C, ¹⁴O), E=96 MeV; measured σ(E(¹⁴O)). ²⁵Ne deduced mass excess, levels. Enriched target.

doi: 10.1016/0375-9474(85)90101-0
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1984CO20      Phys.Rev. C30, 1538 (1984)

J.Cook, K.W.Kemper, P.V.Drumm, L.K.Fifield, M.A.C.Hotchkis, T.R.Ophel, C.L.Woods

¹⁶O(⁷Li, ⁷Be)¹⁶N Reaction at 50 MeV

NUCLEAR REACTIONS ¹⁶O(⁷Li, ⁷Li), (⁷Li, ⁷Be), E=50 MeV; measured σ(θ), σ(E(¹⁶N)); deduced optical model parameters. ¹⁶N levels deduced spectroscopic amplitudes. Microscopic DWBA analysis.

doi: 10.1103/PhysRevC.30.1538
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1521.

1984FI02      Nucl.Phys. A417, 534 (1984)

L.K.Fifield, M.A.C.Hotchkis, P.V.Drumm, T.R.Ophel, G.D.Putt, D.C.Weisser

The Mass and Low-Lying Levels of ⁴⁰Cl

NUCLEAR REACTIONS ⁴⁰Ar(⁷Li, ⁷Be), E=52, 54 MeV; ⁴⁰Ar(¹¹B, ¹¹C), (¹¹B, ¹³N), E=81 MeV; measured σ(E(⁷Be)), σ(E(¹¹C)), σ(E(¹³N)). ⁴⁰Cl deduced mass excess, levels. ³⁸S deduced levels.

doi: 10.1016/0375-9474(84)90411-1
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1983HO08      Nucl.Phys. A398, 130 (1983)

M.A.C.Hotchkis, L.K.Fifield, J.R.Leigh, T.R.Ophel, G.D.Putt, D.C.Weisser

New Measurements of the Masses of ¹⁵B and ¹⁹N

NUCLEAR REACTIONS ⁴⁸Ca(¹⁸O, ¹⁵B), (¹⁸O, ¹⁹N), E=108-119 MeV; measured σ(E(¹⁵B)), σ(E(¹⁹N)). ¹⁵B, ¹⁹N deduced mass excess. Enriched target.

doi: 10.1016/0375-9474(83)90652-8
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1983PU01      Nucl.Phys. A399, 190 (1983)

G.D.Putt, L.K.Fifield, M.A.C.Hotchkis, T.R.Ophel, D.C.Weisser

The Mass of ¹⁸N

NUCLEAR REACTIONS ¹⁸O(⁷Li, ⁷Be), E=52 MeV; measured σ(E(⁷Be)). ¹⁸N deduced mass excess, levels. Enriched target.

doi: 10.1016/0375-9474(83)90602-4
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1982FI10      Nucl.Phys. A385, 505 (1982)

L.K.Fifield, J.L.Durell, M.A.C.Hotchkis, J.R.Leigh, T.R.Ophel, D.C.Weisser

The Mass of ¹⁸C from a Heavy Ion Double-Charge-Exchange Reaction

NUCLEAR REACTIONS ⁴⁸Ca(¹⁸O, ¹⁸C), ⁴⁸Ca(¹⁸O, ¹⁷C), E=112 MeV; measured σ(E(¹⁸C)), σ(E(¹⁷C)). ¹⁸C, ¹⁷C deduced mass excesses, levels. Enriched target.

doi: 10.1016/0375-9474(82)90100-2
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