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Träfflista för sökning "WFRF:(Blomquist C) srt2:(2000-2004)"

Sökning: WFRF:(Blomquist C) > (2000-2004)

  • Resultat 1-9 av 9
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  • Bargholtz, C, et al. (författare)
  • Using a CdTe detector for Te-125 Mossbauer Spectroscopy: Application to the f-factor in Mg3TeO6
  • 2000
  • Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - : ELSEVIER SCIENCE BV. - 0168-583X. ; 170:1-2, s. 239-244
  • Tidskriftsartikel (refereegranskat)abstract
    • An apparatus for Mossbauer spectroscopy has been developed with a cadmium telluride (CdTe) gamma-ray detector. Complete data regarding gamma-ray energy, source velocity, temperature and real time are stored for off-line analysis. The apparatus has been us
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  • Blomquist, M, et al. (författare)
  • Comparison between a conventional treatment energy and 50 MV photons for the treatment of lung tumours
  • 2002
  • Ingår i: Physics in Medicine and Biology. - 0031-9155 .- 1361-6560. ; 47:6, s. 889-897
  • Tidskriftsartikel (refereegranskat)abstract
    • Radiation therapy in the thoracic region is difficult due to the presence of many dose-limiting structures and the large density differences that affect the dose distribution. Conventional irradiation techniques use low-energy photon beams to avoid build-up effects superficially in the tumour and increased lateral scattering of the beams. For deep-seated tumours higher beam energies could have lung-sparing properties that would enable dose escalation. A comparison was made for a conventional low photon energy (6 MV) and 50 MV photons for the treatment of a lung tumour. A representative patient geometry was selected, consisting of a small tumour semi-enclosed in lung tissue. Treatment plans were designed using a commercial 3D-pencil beam treatment planning system. The treatment beams designed in the TPS were simulated with the Monte Carlo code EGS4/BEAM and the dose distribution in the phantom created from the patients CT-data was calculated using MCDOSE with identical beam geometry for both energies. The intrinsic difference between the two photon energies implies a sparing effect of lung that can be utilized for dose escalation. For a treatment with two beams the mean total dose to the tumour could be increased by 5.3% for 50 MV, corresponding to 3.2 Gy for a prescription dose of 60 Gy, with the same complication probability for the treated lung as for 6 MV. In conclusion, high-energy beams have qualities that can be taken advantage of for irradiation of lung tumours. Optimum solutions would probably require the use of both high- and low-energy beams.
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  • J.Lindner, A.Scherz, P.Poulopoulos, C.Rudt, A.N.Anisimov, H.Wende, K.Baberschke, P.Blomquist, R.Wäppling, F.Wilhelm, N.B.Brookes (författare)
  • Ultrathin Fe-limit in Fe/V(001) superlattices
  • 2003
  • Ingår i: Journal of Magnetism and Magnetic Materials. ; 256:1-3, s. 404-411
  • Tidskriftsartikel (refereegranskat)
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  • Resultat 1-9 av 9

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