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  • 1985-1989  (4)
  • 1975-1979  (2)
  • 1970-1974  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Diffusion of aluminum in ion-implanted α-Ti (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 613-614 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The diffusion of Al in polycrystalline ion-implanted α-Ti has been studied in the temperature range 600–850 °C using ion-beam techniques. Diffusion couples were created by ion implantation. The time-dependent concentration profiles were monitored by the use of the nuclear resonance broadening technique through the 27Al(p,γ) 28Si reaction. The effect of the implantation energy and implanted dose on the diffusivity of Al has been investigated. The value of 1.62±0.11 eV for the activation energy and (7.4±9.8)×10−7 cm2/s for the frequency factor was obtained. The present result is discussed in the framework of the Ti diffusion barrier used in semiconductors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334747
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nitrogen implantation of metals (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 1423-1425 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Sixteen metals implanted to saturation with 300-keV N2+ ions have been studied using nuclear resonance broadening and Rutherford backscattering techniques to profile the implanted concentration. Blisters due to the implanted nitrogen were observed in Mg, Al, Ti, V, Cr, Nb, Mo, Ta, W, and AISI 304 steel but not in Cu, Zr, Ag, Hf, and Au. The nominal saturation concentration at maximum varied from 50 to 60 at. % for all cases except for Cu, Ag, and Au, where it was 20 at. %. The surface hardness was generally increased by a factor between 1.2 and 2.3. However, no increase was observed for Mo, Ag, and Au. The mononitride formation in Ti, Zr, and Hf was verified by x-ray diffraction. The formation of blisters and diffusion in the preparation of nitrides is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334504
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Radiation enhanced outdiffusion during ion implantation (1979)
    Springer
    Applied physics 19 (1979), S. 199-203 
    Details
    ISSN: 1432-0630
    Keywords: 61.70T ; 61.80J
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract For a systematic prediction of the radiation-enhanced outdiffusion occurring during implantation, the use of a model based on the effect of vacancy flow on diffusion is described. The model agrees reasonably well with experiments in all twentysix measured cases. For the systematic understanding of the radiation enhanced outdiffusion, an approximative diagram based on the activation energy of self-diffusion is constructed for all pure elements and its application possibilities are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00932398
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Annealing behaviour of implanted nitrogen in bulk and evaporated Ni (1987)
    Springer
    Applied physics 42 (1987), S. 263-267 
    Details
    ISSN: 1432-0630
    Keywords: 66.30.Jt ; 61.70.Tm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The diffusion coefficients of nitrogen in N-implanted polycrystalline Ni have been deduced. Both bulk and Ni-evaporated samples implanted with nitrogen were annealed at 150–500° C. The nitrogen profiles were probed using the nuclear resonance broadening technique. The value of 0.99±0.12 eV for the activation energy and (3.0 −2.8 +40 )×10−6 cm2/s for the frequency factor were obtained for implanted N in bulk Ni. The solubilities for both the bulk and evaporated Ni samples are given. In evaporated Ni nitrogen migration is enhanced due to the defects arising during evaporation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616560
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  • 5
    Electronic Resource
    Electronic Resource
    A study of the excited states of23Na from the22Ne(p, γ)23Na reaction (1971)
    Springer
    The European physical journal 247 (1971), S. 400-407 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The gamma decays of 1922Ne(p, γ)23Na resonances in the range ofE p =400−1300 keV have been investigated by means of a 38 cm3 Ge(Li) detector. Branching ratios of the resonances and bound states were determined. Gamma-ray energy measurements yield the energies of 19 bound states and the value of 8794.0±1.5 keV forQ. The existence of the 3913 keV doublet state was studied through the (p, γ) reaction. No evidence for such a doublet was found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395339
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  • 6
    Electronic Resource
    Electronic Resource
    Angular distribution measurements of gamma-rays from the22Ne(p, γ)23Na reaction (1972)
    Springer
    The European physical journal 250 (1972), S. 387-394 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Angular distribution measurements of gamma-rays from the22Ne(p, γ)23Na reaction on theE p =897, 1006, 1091 and 1278 keV resonances have been made. Spin and parity assignments for several bound states are presented together with multipole mixing ratios for transitions from resonance and bound states. The level at 6617 keV (7/2+) is proposed to be a member of the rotational band based on the Nilsson orbit 5(K π=5/2+).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379751
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  • 7
    Electronic Resource
    Electronic Resource
    On the gamma decay of analogue resonances in the58Fe(p, γ)59Co reaction (1974)
    Springer
    The European physical journal 270 (1974), S. 129-132 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Resonances in the reaction58Fe(p, γ)59Co have been studied in the analogue regionE p =2.20–2.25 MeV. Theγ-ray decays of fourteen resonances and the energies of nine bound states have been obtained using a 80 cm3 Ge(Li)-detector. TheQ-value was found to be 7359.7±3.0 keV. One lifetime and six lifetime limits were determined from the Doppler-shift attenuation method for bound states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01677444
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Investigation of22Na excited states (1970)
    Springer
    The European physical journal 234 (1970), S. 455-464 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fourteen21Ne(p, γ)22Na resonances have been observed in the rangeE p =300–1,300 keV. Theγ-decay of all these resonances has been investigated by means of a 38 cm3 Ge(Li) detector. Energies and branching ratios of several bound states have been determined. TheQ-value was determined as 6,738.5±1.7 keV. Lifetimes of seven states were determined with the Doppler-shift attenuation method. The observed upper limit (τ m ≦4 fs) of the lifetime for the 4,071 keV state, regarded as the analogue of the third excited state in22Ne, and the transition observed from this state to the 1,528 keV state do not support the proposed rotational band structure of the22Na low-lying states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01394368
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    A method for the determination of recoil ion ranges needed in DSA measurements (1972)
    Springer
    The European physical journal 250 (1972), S. 82-86 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract From the yield curve of the27Al(p, γ)28Si reaction obtained with implanted targets, the range distributions and mean ranges of 50 keV Al+-ions have been determined in C, Cu, Mo and Ta. The energy straggling of protons has been taken into account in the analysis. The DSA lifetime values in different backing materials are in good agreement when measured ranges are used for the determination of the stopping parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01386894
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  • 10
    Electronic Resource
    Electronic Resource
    Investigation of gamma ray transitions and lifetimes in35Cl (1973)
    Springer
    The European physical journal 260 (1973), S. 185-196 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fortyeight resonances of the34S(p, γ)35Cl reaction in the proton rangeE p=1–2 MeV have been observed. Gamma decay of twentyeight of these was investigated by means of a 55 cm3 Ge(Li) detector, and the energies and branching ratios of several bound states have been determined. TheQ-value was found to be 6367.0 ± 1.5 keV. The lifetimes 150±20, 400±140, 19±4, 14±2, 145±50, 20±5, 20±4, 42±4 and 7±3 fs were determined with the DSA method for the states at 1219, 1763, 2694, 3003, 3944, 3967, 4059, 4178 and 4882 keV, respectively. The experimental transition strengths were found to be in agreement with those given by manyparticle shell-modell calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395979
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    Paper (German National Licenses)
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