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  • 1
    Electronic Resource
    Electronic Resource
    Nanosecond lifetimes of the low-spin states in the nucleus ^1^4^7Nd - A particle-rotor model interpretation of the results
    Amsterdam : Elsevier
    Nuclear Physics, Section A 339 (1980), S. 465-476 
    Details
    ISSN: 0375-9474
    Keywords: Nuclear Reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(80)90027-5
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  • 2
    Electronic Resource
    Electronic Resource
    Examination of oil paintings by using a PIXE/PIGME combination
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 14 (1986), S. 70-75 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-583X(86)90425-8
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  • 3
    Electronic Resource
    Electronic Resource
    The decay of 1.4 min173Er (1972)
    Springer
    The European physical journal 252 (1972), S. 283-299 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A 1.4 ± 0.1 min activity which is assigned to β−-decay of 68 173 Er has been produced with 14–15 MeV neutrons through the reaction176Yb(n, α)173Er. Its decay has been studied with Ge(Li) detectors and several (γ)(γ) as well as (γ)(β) coincidence arrangements. Eight gamma rays with energies 94.2, 116.14, 118.6, 122.40, 192.8, 199.2, 800.8 and 895.2 keV were assigned to the decay of173Er. The proposed level scheme of the daughter nuclide 69 173 Tm contains levels at 0, 2.5, 118.6, 124.9, 317.7, 411.9 and 1212.8 keV. The 317.7 keV level is an isomeric state with a measured half-life of 10±3 μs. This 10 μs isomer and the 411.9 keV level are thought to be the band head and 9/2− rotational member of 7/2− [523] Nilsson state, respectively. The levels at 0, 2.5, 118.6 and 124.9 keV are interpreted as 1/2+, 3/2+, 5/2+ and 7/2+ members of the 1/2+ [411] band and the level at 1212.8 keV as the 9/2− [514] Nilsson state. Some systematic considerations and theoretical transition probability calculations are also included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01387301
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  • 4
    Electronic Resource
    Electronic Resource
    Low-spin states in151Gd (1975)
    Springer
    The European physical journal 272 (1975), S. 341-349 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level structure of the 87-neutron nucleus151Gd has been investigated by studying the EC- andβ +-decay of151Tb. Gamma-ray and conversion electron spectra as well as gamma-gamma coincidence spectra were measured by using semiconductor spectrometers and a high-capacity two-parameter recording system. The proposed decay scheme contains several new energy levels in151Gd, among them a 5−/2 state at 427 keV. To explain the low-energy level structure, a small stable deformation is assumed for151Gd. Using a single-particle-plus-rotor model based on a generalized Woods-Saxon potential, complete mixing of the shells 1h 9/2, 2f 7/2 and separately 1i 13/2 is observed. By these mixings the correct level order and approximately correct excitation energies up to 1 MeV are reproduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01440859
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  • 5
    Electronic Resource
    Electronic Resource
    Energy levels of174Yb populated in the decay of174Tm (1971)
    Springer
    The European physical journal 247 (1971), S. 436-443 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The decay of the174Tm activity has been studied with Ge(Li) detectors and with a Ge(Li)—NaI(Tl) coincidence arrangement. Gamma ray energies and relative intensities were determined. Five new gamma transitions are reported, four of which have been placed in the decay scheme in addition to the previously observed but unplaced 1305 keV transition. Five energy levels at 1557.7, 1762.1, 1781.1, 1877.5 and 2050.1 keV not earlier reported to be populated in the decay of174Tm are suggested. Some spin and parity assignments are proposed and the intrinsic structure of several states is discussed in terms of two quasi-particle excitations. For the half-life of174Tm a value 5.4±0.1 min was measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395342
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  • 6
    Electronic Resource
    Electronic Resource
    States of167Ho from the decay of neutron rich nuclide167Dy (1977)
    Springer
    The European physical journal 280 (1977), S. 309-316 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Theβ −-decay of 66 167 Dy produced through the fast neutron reaction170Er(n, α)167Dy has been investigated by using several kinds of detectors and a high-capacity two-parameter recording system. The half-life andβ −-decay energy of167Dy were determined to beT 1/2 = 6.20 ± 0.08min andQ β-=2.35±0.06, respectively. The observed level scheme of 67 167 Ho (completely unknown previously) contains 12 states, among them a 6.0±0.1 μsM2 isomer at 259.3 keV. On the basis of theoretical and systematic considerations combined with multipole determinations, the following Nilsson model assignments are proposed for the lowest states of167Ho: 0 keV (7−/2 [523]), 259.3 keV (3+/2[411]), 319.8 keV (5/2 3+/2[411]), 392.5 keV (1+/2[411]), 410.0 keV (3/2 1+/2[411]), 569.7 keV (3−/2{7−/2[523], 2+}). Theβ-decay proceeds mainly to the proposed gamma-vibrational state at 569.7 keV with an anomalously low logft value 5.4, indicating similarity between the microscopic structures of this state and the famous ¦K 0−2¦ gamma vibration of165Ho.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434358
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  • 7
    Electronic Resource
    Electronic Resource
    Level structure of170Er observed in the decay of the 2.76 min170Ho (1978)
    Springer
    The European physical journal 286 (1978), S. 57-63 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract TheΒ −-decay of the longer-lived170Ho isomer produced through the170Er(n, p)170Ho reaction has been investigated by using a versastile detector and coincidence equipment. The half-life andΒ −-decay energy were determined to beT 1/2=2.76±0.05 min andQ β =3.85±0.15 MeV, respectively. In addition to the ground state band and some higher energy levels, the proposed level scheme of170Er contains 11 states between 1.0 and 1.6 MeV (6 new ones), which are connected mutually by previously unknown low-energy transitions. Spin and/or parity assignments based mainly on coincidence data and multipolarity determinations are suggested for most of these states. By using systematic considerations and the nuclear projection model calculations several bands withK≧2 can be assigned tentatively. As a side result the half-life of169Ho was determined to be 4.7 ±0.2 min.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434613
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  • 8
    Electronic Resource
    Electronic Resource
    Low-lying levels in the nuclei151Nd and155Sm (1984)
    Springer
    The European physical journal 316 (1984), S. 361-366 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Decay properties of excited states in the151Nd and155Sm nuclei produced by 10 MeV douterons have been investigated with in-beam gamma-gamma-coincidence equipment during bombardment of the150Nd and154Sm targets. The results largely confirm the data obtained earlier for these nuclei. The (d, p γ) reaction channel favors population of odd-parity low-spin levels, whose energies follow the rule of regular band structure for well-deformed nuclei. The level schemes are interpreted with calculations using an axial particle-rotor model with a Woods-Saxon potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439909
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  • 9
    Electronic Resource
    Electronic Resource
    Low-spin states of153Gd observed in the decay of153Tb (1974)
    Springer
    The European physical journal 266 (1974), S. 103-116 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Level structure of the 89-neutron nucleus153Gd has been investigated by studying theEC-decay of isotope-separated153Tb sources with several semiconductor detectors. In addition to singles gamma and electron spectra,γ-γ ande −-γ coincidences were investigated by using Ge(Li) and Si(Li) spectrometers and a high-capacity two-parameter recording system. In all, 191γ-rays are assigned to the decay of the 2.4d153Tb. The proposed level scheme of153Gd containing most of the observed transitions shows a very high density of low-spin states (45 states below 1.5MeV). Spin and/or parity assignments based mainly on coincidence data and measured transition multipolarities are proposed for a majority of these states. Nilsson model classifications of some levels are discussed. On the basis of logf t values the spin and parity of the ground state of153Tb are suggested to be 3/2+ or 5/2+.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01668708
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  • 10
    Electronic Resource
    Electronic Resource
    An external helium flushed milli-beam for combined PIXE and PIGE analysis (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 99 (1986), S. 307-314 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A helium flushed external beam PIXE/PIGE facility for nondestructive multielemental analysis has been developed and tested. By using proton energies Ep≈4.1 MeV and simultaneous detection of X- and gamma-rays, nearly complete analysis of all elements is achieved with nondestructively low ion current of Ip≈1 nA (except H, He, C, O and Ne are detected in a single measurement with sensitivities from the ppm level to about one percent). For most of the elements there are at least two channels of identification, which is a special advantage in analyzing unfavourable matrices, where the radiations of certain elements may interfere with each other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037590
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