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  • 1
    Digitale Medien
    Digitale Medien
    Frequency of patients with acute asthma in relation to ozone, nitrogen dioxide, other pollutants of ambient air and meteorological observations (1997)
    Springer
    International archives of occupational and environmental health 69 (1997), S. 317-322 
    Details
    ISSN: 1432-1246
    Schlagwort(e): Key words Asthma-epidemiology ; Air-pollutants ; Environmental adverse effects ; Ozone adverse effects ; Nitrogen dioxide adverse effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Objective. To study the association of the daily frequency of registration of patients with acute asthma at the emergency department of a central hospital in the south-west of Sweden with levels of air pollution and meteorological observations. Methods. A retrospective longitudinal study was made of asthma patients taken from a hospital registry. This information was correlated with measurements of ozone, nitrogen dioxide, sulphur dioxide, toluene, temperature and relative humidity. Patients were from the catchment area of the Central Hospital of Halmstad containing around 120 000 inhabitants. A total of 4127 visits of patients with acute asthma to the emergency department at the Central Hospital of Halmstad were registered during a period of 1247 days from January 1990 to May 1993. The differential optical absorption spectroscopy (DOAS) technique was used to monitor levels of air pollutants over a distance of 1000 m in the central part of the town of Halmstad. Data on temperature, relative humidity, precipitation, wind speed and wind direction for the time period were supplied by the Swedish Meteorological and Hydrological Institute (SMHI). Results. There were many statistically significant correlations between the levels of air pollutants and the meteorological measurements and a strong negative correlation between ozone and nitrogen dioxide. There was a statistically significant effect on asthma visits in children of low temperature and high nitrogen dioxide levels, and on asthma visits in adults of high temperature and high levels of ozone. Conclusions. There was a different reaction pattern in children and adults with asthma regarding temperature and ozone/nitrogen dioxide. The strong correlations between temperature and air pollution and between the levels of ozone and nitrogen dioxide made the true relation between asthma, air pollution and temperature hard to evaluate statistically.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004200050154
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  • 2
    Digitale Medien
    Digitale Medien
    Particle × phonon multiplets in 65 147 Tb82 (1995)
    Springer
    The European physical journal 351 (1995), S. 245-246 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.60.Cs ; 21.60.Ev ; 27.60.+j
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Above-yrast states in the one-ptoton nucleus147Tb were studied in144Sm(6Li,3n)γ- and electron-measurements at the Coulomb barrier. Together with data from a separate study of147Dyβ-decay, members of all ten particle×phonon configurations of147Tb were identified, including the completeπh11/2×3− and πs1/2×3− octupole multiplets.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01290904
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  • 3
    Digitale Medien
    Digitale Medien
    Shell model yrast states in the many-particle nucleus 72 157 Hf85 (1995)
    Springer
    The European physical journal 351 (1995), S. 247-248 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 23.20.Lv ; 21.60.Cs ; 27.70.+q
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract In-beamγγ- andγγn-measurements have for the first time identified excited states in the 72 157 Hf85 nucleus and have established its yrast levels up to 6.5 MeV and I=(51/2). The results of parameter-free 11-particle recoupling calculations in the framework of the shell model for the configurationsπh 11 2/8 νf 7 2/3 andπh 11 2/8 νf 7 2/2 h9/2 are in excellent agreement with the observed levels up to 39/2 at 4.758 MeV. A weakly populated 52 ns 29/2+ yrast isomer at 2.876 MeV is assigned as the three-neutron configurationνf7/2h9/2i13/2.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01290905
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  • 4
    Digitale Medien
    Digitale Medien
    Neutron single-particle energies in the 132Sn region (1999)
    Springer
    The European physical journal 5 (1999), S. 239-241 
    Details
    ISSN: 1434-601X
    Schlagwort(e): PACS: 21.60.Cs Shell model – 23.20.Lv Gamma transitions and level energies – 25.85.Ca Spontaneous fission – 27.60.+j 90 ≤ A ≤ 149
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: Excited levels in 133Sn and 134Sb, populated in spontaneous fission of 248Cm, were studied by means of prompt-γ spectroscopy, using the EUROGAM 2 multidetector array. The neutron i 13/2 single-particle energy has been determined for the first time in the 132Sn region. The energy of the h 9/2 neutron level, proposed previously, has been confirmed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100500050280
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  • 5
    Digitale Medien
    Digitale Medien
    High spin states in205Pb and a precision test of the nuclear shell model for three nucleons (1976)
    Springer
    The European physical journal 277 (1976), S. 273-290 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Using the204Hg(α, 3n) reaction withα-particles of about 40 MeV, we have proved by applying nowadays conventionalγ-ray spectroscopy in-beam technique, that there are two isomeric states in205Pb at the excitation energies 5,161.3 and 3,195.5 keV having the half-lives 71±3 and 217±5 ns, respectively. These isomeric states have spins and parities 33/2+ and 25/2− and are mainly due to thei 13 2/−3 andi 13 2/−2 p 1 2/−1 configurations, respectively. This conclusion is supported by the experimentalg-factors of these states being −0.159±0.008 and −0.0676±0.0011, respectively. It is furthermore shown that theE2 effective neutron charge is the same forE2 transitions from the 33/2+ state in205Pb and from the 12+ state in206Pb as required by the assumption that the208Pb core is responsible for the totalE2 strength of the neutron holes, and that these states are due to thei 13 2/−3 andi 13 2/−2 configurations. The calculatedB(E3) values ofE3 transitions from isomeric states in205Pb and206Pb agree reasonably well with the experimental values as expected from the assumption that theE3-strength should come from particle coupling to the octupole states of the208Pb core. The energies of the six most well established excited states in205Pb with angular momenta in the region 19/2–33/2 were calculated using empirical single-particle energies, empirical two-particle interactions and angular momentum algebra. The average deviation between experimental and calculated energies is −3 keV and the root mean square deviation 6 keV as compared to the uncertainty ± 5 keV in the nuclear masses used in the calculation. For the orbits concerned the shell model is thus valid with an extremely high precision. The contribution of effective three-particle interaction in these orbits must consequently be less than about 5 keV.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01415603
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  • 6
    Digitale Medien
    Digitale Medien
    Evidence for a 3.6 minute isomeric 12− state of the πh 11 2/−1 vi 13 2/−1 configuration in206Tl and effective two-particle interactions (1976)
    Springer
    The European physical journal 278 (1976), S. 257-264 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Using the204Hg(α, pn)-reaction andα-particles of energies 39–55 MeV, we have found an isomeric 3.6 min 12− state in206Tl at 2,642.9 keV which has the two-hole configurationπh 11 2/−1 vi 13 2/−1 The 12− state decays mainly by anE5 transition of energy 1,021.4 keV to a 7+ state at 1,621.5 keV whose main configuration isπs 1 2/−1 vi 13 2/−1 There is, in addition, evidence for a weak 565 keVM 4 branch to an 8+ state at 2,078 keV whose main configuration should beπh 11 2/−1 vf 5 2/−1 . The 7+ state decays by a stretched cascade ofγ-rays to states of the following values ofJ π and excitation energy: 5 − + , 1,405.4 keV; 4−, 952.1 keV; 2−, 265.8 keV and 0−, 0 keV. The main configurations of these states areπh 11 2/−1 vp 1 2/−1 ,πd 3 2/−1 vf 5 2/−1 ,πd 3 2/−1 vp 1 2/−1 andπs 1 2/−1 vp 1 2/−1 respectively. From the nuclear masses of208Pb,207Pb,207Tl, and206Tl and the experimental excitation energies it is possible to obtain the proton hole-neutron hole interaction in206Tl. This interaction is compared with the calculations of Kuo and Herling and the discrepancies are discussed. The 12−→8+ M4 transition rate is reduced because of destructive interference between the protonh 11/2→d 3/2 and the neutroni 13/2→f 5/2 contributions. The magnitude of the reduction is accurately reproduced by the wave functions of Kuo and Herling. The 12−→7+ E5 transition rate is about twice as large as the single-holeπh 11 2/−1 πs 1 2/−1 transition rate. This deviation is fully explained by the configuration admixtures in the 7+ state, given by Kuo and Herling.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01409176
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  • 7
    Digitale Medien
    Digitale Medien
    High spin isomers in151Dy+ (1979)
    Springer
    The European physical journal 290 (1979), S. 337-338 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Three yrast isomers in151Dy, at 6.03 MeV (I=49/2, T/=15(3) ns), 4.90 MeV (41/2−, 5.5(1.0) ns), and at 2.96 MeV(27/2−, 1.3(6) ns) have been located through152Gd(α,5n) and136Ce(18O, 3n) measurements. Shell model configurations are suggested for them.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01408552
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  • 8
    Digitale Medien
    Digitale Medien
    Particle plus octupoleM2/E3 isomers and high-spin particle-hole states in147Tb and148Tb (1979)
    Springer
    The European physical journal 293 (1979), S. 135-149 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The level structures of theN=82 andN=83 nuclei147Tb and148Tb have been studied by means of (α, 8n) and (α,7n) reactions induced by 68 to 110 MeVα particle bombardments of151Eu targets. In-beam conversion electron measurements have established that isomers withT 1/2=4.8(6)ns in147Tb andT 1/2=22(1)ns in148Tb decay byM2+E3 transitions to the ground states. The measuredB(E3) values show that the isomeric states arise from the coupling of the valence nucleon(s) to the146Gd core octupole. Particlephonon coupling in these nuclei and in the one-neutron nucleus147Gd is discussed and compared with well known cases involving the208Pb core. The higher lying yrast states in the two Tb nuclei are described as shell-model particle-hole excitations using empirical single particle energies and nucleon-nucleon interactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01559755
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  • 9
    Digitale Medien
    Digitale Medien
    γ Spectroscopy of 209Pb with deep inelastic reactions (1998)
    Springer
    The European physical journal 1 (1998), S. 261-266 
    Details
    ISSN: 1434-601X
    Schlagwort(e): PACS:21.60.Cs Shell model – 23.20.Lv Gamma transitions and level energies – 27.80.+w 190 ≤ A ≤ 219 – 25.70.-z Low and intermediate energy heavy-ion reactions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: High spin states in nuclei around 208Pb were populated in deep inelastic collisions of 76Ge, 136Xe, and 208Pb projectiles with 208Pb targets at beam energies about 12% above the Coulomb barrier. New states in 209Pb were found by measuring γ-γ-coincidences. They are interpreted as the yrast states that originate from the coupling of one neutron to the lowest excitations of the 208Pb core. The results are discussed in the frame of the shell model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100500050060
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  • 10
    Digitale Medien
    Digitale Medien
    Maximum spin aligned states in 98 47Ag51 (1998)
    Springer
    The European physical journal 1 (1998), S. 7-9 
    Details
    ISSN: 1434-601X
    Schlagwort(e): PACS:23.20.Lv Gamma transitions and level energies – 21.60.Cs Shell model – 27.60+j $90 \leq A \leq 149$
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract. New excited states have been observed in the neutron deficient isotope 98Ag following the 58Ni+50Cr →108Te* heavy–ion reaction. One of these states may be interpreted as a maximum spin aligned state of the πg9/2 −3νg7/2 configuration. Other possible interpretations within the nuclear shell model are discussed as well.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100500050024
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