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  • 1995-1999  (13)
  • 1975-1979  (8)
  • 1
    Electronic Resource
    Electronic Resource
    A Penning trap mass spectrometer for the study of cluster ions (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 4902-4910 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A Penning trap system has been set up for storing and investigating cluster ions over time ranges from microseconds up to minutes. This enables studies of cluster reactions with extremely low cross sections and the observation of their time dependence in a new regime. The ions are created externally by laser vaporization, cooled by adiabatic expansion of a supersonic beam, and injected into the Penning trap. Detection of reaction products is achieved by combining the advantages of two complementary approaches, viz. the high resolution of Fourier transform mass spectrometry and the high sensitivity of single-ion counting with a time-of-flight mass spectrometer. The performance of the apparatus is illustrated by results of recent cluster experiments. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146172
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  • 2
    Electronic Resource
    Electronic Resource
    Determination of spin, magnetic moment and isotopic shift of neutron rich205Hg by optical pumping (1975)
    Springer
    The European physical journal 272 (1975), S. 369-374 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron rich205Hg (T 1/2=5.2 min) was produced and on-line mass separated at the ISOLDE facility at CERN. The polarization achieved by optical pumping via the atomic line (6s 21 S 0↔6s6p 3 P 1,λ=2 537Å) was monitored by theβ decay asymmetry. Hyperfine structure and isotopic shift of the205Hg absorption line was determined by Zeeman scanning. In addition a magnetic resonance was performed on the polarized205Hg nuclei in the atomic ground state. The results are: $$I(^{205} Hg) = \tfrac{1}{2}$$ (confirmed);μ I (205Hg)=0.5915 (1)μ N (uncorrected for diamagnetism); isotopic shiftδv204/205=v(205Hg)-v(204Hg)=−1.8 (1) GHz.μ I and IS are discussed briefly in the frame of current literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01440863
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear spins of76Rb and119Cs byβ radiation detected optical pumping (1978)
    Springer
    The European physical journal 284 (1978), S. 3-8 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An optical pumping apparatus has been attached to the reconstructed ISOLDE on-line mass separator at CERN in order to obtain nuclear data of isotopes far fromβ stability. As first results the spins of76Rb (T 1/2=36.8 s) and119Cs (T 1/2=37.7 s) have been determined byβ radiation detected optical pumping (β-RADOP) to beI=1 andI=9/2 respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01433867
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  • 4
    Electronic Resource
    Electronic Resource
    Shell model structure at100Sn — The nuclides98Ag,103In, and104, 105Sn (1995)
    Springer
    The European physical journal 352 (1995), S. 373-390 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Sf ; 21.60.Cs ; 23.20.-g ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The neutron deficient nuclei98Ag,104Sn withT z =2 and103In,105Sn (T z=5/2) were studied in-beam following the reaction of 250 MeV58Ni+50Cr. Neutron and charged particle (p, α) gatedγγ-coincidence spectra were used to identify these nuclei, which are populated with yields between 0.05% and 2% of the total residue cross section, and to determine their level schemes. In a comprehensive shell model study various approaches for the residual interaction were used to describe these newly and several previously studied neutron deficient nuclei. As a result predictions for the neutron single particle energies for100Sn are obtained and used to discuss the next generation of experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01299755
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  • 5
    Electronic Resource
    Electronic Resource
    Orientation of199mHg by optical pumping detected by γ-radiation anisotropy (1975)
    Springer
    The European physical journal 272 (1975), S. 375-380 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract 199mHg was produced and mass separated at the ISOLDE facility (CERN). Nuclear orientation achieved by optical pumping via the resonance line 6s 2 1 S 0→6s6p 3 P 1,λ=2537Å was monitored by means of the anisotropy of theγ-radiation emitted in the cascade199mHg(I=13/2+) $${}^{199m}Hg(I = 13/2^ + )\xrightarrow[{M4}]{}{}^{199*}Hg(I = 5/2^ - )\xrightarrow[{E2}]{}{}^{199}Hg(I = 1/2^ - ).$$ 199*Hg(I=5/2−)199Hg(I=1/2−). Maximum anisotropies of 35% (2,8%) were found in the M4 (E2) transition. A Zeeman scanning of the3 P 1 state yielded the positions ofF=13/2 and theF=15/2 hfs components relative to the reference isotope204Hg at 15.13 (15) GHz and −2.86 (15) GHz respectively. Isotopic shift and the quadrupole interaction constant were deduced from these values using the knownA factor.δv 199m/2O4=v 2O4−v 199m=12.20 (16) GHzB=−0.86 (25) GHz. From theB factor the spectroscopic quadrupolment was calculated asQ s =1.54 (44) barn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01440864
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  • 6
    Electronic Resource
    Electronic Resource
    High-spin states in109Sn and their decay to the ground state (1995)
    Springer
    The European physical journal 351 (1995), S. 123-124 
    Details
    ISSN: 1434-601X
    Keywords: 23.20.Lv ; 27.60.+j ; 21.60.Cs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An extended level scheme of109Sn is presented showing high-spin states up to Ex≈ 8 MeV and spins up toJπ=(41/2+). Their decay to the 5/2+ ground state has been observed identifying a 12.8 keV 7/2+ → 5/2+ transition. A half-life of T1/2=7(1) ns has been measured for the 17/2+ state atE x =2114 keV. The experimental data are compared with the predictions of shell-model calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289517
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  • 7
    Electronic Resource
    Electronic Resource
    Nuclear Radiation Detected Optical Pumping of neutron-deficient Hg isotopes (1976)
    Springer
    The European physical journal 276 (1976), S. 187-202 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The extension of the Nuclear Radiation Detected Optical Pumping method to mass-separated samples of isotopes far off stability is presented for a series of light Hg isotopes produced at the ISOLDE facility at CERN. The isotope under investigation is transferred by an automatic transfer system into the optical pumping apparatus. Zeeman scanning of an isotopically pure Hg spectral lamp is used to reach energetic coincidence with the hyperfine structure components of the 6s 2 1 S 06s6p 3P1,λ=2,537 Å resonance line of the investigated isotope and the Hg lamp. The orientation built up by optical pumping is monitored via the asymmetry or anisotropy of the nuclear radiation. Nuclear spins, magnetic moments, electric quadrupole moments and the isotope shifts are obtained for181Hg-191Hg using theβ asymmetry as detector. The extension of the method using theγ anisotropy is discussed and test measurements on193Hg are presented. This paper describes the experimental procedure, results, and discussion are given in a following publication.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412097
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  • 8
    Electronic Resource
    Electronic Resource
    Spins, moments and charge radii in the isotopic series181Hg-191Hg (1976)
    Springer
    The European physical journal 276 (1976), S. 203-217 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure splitting and the isotope shift in the (6 s2 1S0 - 6s 6p3P1,λ=2,537 Å) line of very neutron deficient Hg isotopes were determined by the β radiation detected optical pumping method (β-RADOP). In addition, nuclear magnetic resonance was observed in the atomic ground state. The results are Mean-square nuclear charge radii are calculated. Interpreting the sudden change of nuclear radius between187Hg and185Hg δ〈r2〉187,185=0.42(5)fm2 as oblate-prolate shape transition, one obtains δ〈β2〉 =0.054(5).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412098
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of the isotopic shift of192Hg in the line λ=2537 Å by Zeeman scanning the Hanle signal (1975)
    Springer
    The European physical journal 272 (1975), S. 381-385 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Hanle signal in theλ=2 537 Å resonance line of an line mass separated192Hg was Zeeman scanned from a spectral lamp containing isotopically pure204Hg. The isotopic shift was redetermined asδv 192/204=v 204−v 192=−27.7(3) GHz. The application of this method to even-even isotopes still further from stability is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01440865
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  • 10
    Electronic Resource
    Electronic Resource
    Pain treatment of fibromyalgia by acupuncture (1998)
    Springer
    Rheumatology international 18 (1998), S. 35-36 
    Details
    ISSN: 1437-160X
    Keywords: Key words Fibromyalgia ; Serotonin ; Substance P ; Pain ; Acupuncture ; Therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The lack of objective parameters makes the measurement of pain and the efficacy of pain treatment in patients with chronic pain very difficult. We performed acupuncture therapy in fibromyalgia patients and established a combination of methods to objectify pain measurement before and after therapy. The parameters corresponded to patients' self-report. Twenty-nine fibromyalgia patients as defined by ACR-criteria (25 women, 4 men) with a mean age of 48.2±2.0 years and a mean disease duration of 6.1±1.0 years participated in the study. Pain levels and positive tender points were assessed using the visual analogue scale (VAS, i.e., range 0–100 mm) and dolorimetry. Serotonin and substance P levels in serum and the serotonin concentration in platelets were measured concomitantly. During acupuncture therapy no analgesic medication was allowed. The VAS scores decreased from 64.0±3.4 mm before therapy to 34.5±4.3 mm after therapy (P〈0.001). Dolorimetry revealed a decreased number of tender points after therapy from 16.0±0.6 to 11.8±1.0, P〈0.01. Serotonin levels decreased from 715.8±225.8 μg/1012 platelets to 352.4±47.9 μg/1012 platelets (P〈0.01), whereas the serum concentration increased from 134.0±14.3 ng/ml to 171.2±14.6 ng/ml (P〈0.01). Substance P levels in serum increased from 43.4±3.5 pg/ml to 66.9 ±8.8 pg/ml (P〈0.01). Acupuncture treatment of patients with fibromyalgia was associated with decreased pain levels and fewer positive tender points as measured by VAS and dolorimetry. This was accompanied by decreased serotonin concentration in platelets and an increase of serotonin and substance P levels in serum. These results suggest that acupuncture therapy is associated with changes in the concentrations of pain-modulating substances in serum. The preliminary results are objective parameters for acupuncture efficacy in patients with fibromyalgia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002960050051
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