Zobrazeno 1 - 10
of 109
pro vyhledávání: '"H. J. Brede"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 217:505-512
At the PTB's ion accelerators, a new microbeam facility is now in operation that is capable of delivering single ions, for example, to the nuclei of individual living cells. The wide range of proton and 4He2+ ion energies affords LET-values between 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61ff4feebcbe5bceae52ce2aebe0c363
https://doi.org/10.1016/j.nimb.2003.11.082
https://doi.org/10.1016/j.nimb.2003.11.082
Publikováno v:
Medical Physics. 31:832-838
Since 1978, the Universitatsklinikum in Essen operates a d (14 MeV )+ Be fast neutron beam for patient treatment. Dosimetric studies were performed in a rectangular 40×40 mm 2 neutron/photon field using a transportable watercalorimeter, which had be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff465a1f6f71279ca112d55e70af2204
https://doi.org/10.1118/1.1668394
https://doi.org/10.1118/1.1668394
Autor:
Klaus-Dieter Greif, Erhard Severin, H. J. Brede, W. Köhnlein, D. Schlegel, Wolfgang Göhde, Niels Wedemeyer, D. Uthe
Publikováno v:
International Journal of Radiation Biology. 79:911-918
The shape of the dose-effect curve for neutrons, i.e. the question as to whether the curve is linear or supralinear in the low-dose region, is still not clear. Therefore, the mutagenic effect of very low doses of low-energy neutrons was determined.Hu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad9cfcb2556bad7e2c90505278a9f44f
https://doi.org/10.1080/09553000310001621419
https://doi.org/10.1080/09553000310001621419
Autor:
H. J. Brede, Wayne D. Newhauser
Publikováno v:
Medical Physics. 24:527-533
We calculated the response of gas-cavity dosimeters to 25- and 45-MeV neutrons in order to estimate the portion of the response that originates from neutron interactions within the gas cavity. This affords insight into the validity of the Bragg–Gra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8846835560b690e57eed79425e6b051d
https://doi.org/10.1118/1.597935
https://doi.org/10.1118/1.597935
Autor:
H. J. Brede, Rene Reifarth, W. Rapp, D. Hentschel, Thomas Rauscher, F. Käppeler, H. Klein, Michael Heil
Publikováno v:
Nuclear Physics A. 688:427-429
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8735d5e5e0a73bf6253ff0f6593cab46
https://doi.org/10.1016/s0375-9474(01)00745-x
https://doi.org/10.1016/s0375-9474(01)00745-x
Publikováno v:
Nuclear Science and Engineering. 107:22-34
The sums of the cross sections 12C(n, α0)9Be and 12C(n,n′3α) are determined in the neutron energy range between 7.4 and 11 MeV. An NE-213 scintillation detector is simultaneously used as a carbon t...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a40ccb62dc20340e46c4e157f86156ca
https://doi.org/10.13182/nse91-a23778
https://doi.org/10.13182/nse91-a23778
Publikováno v:
Radiation protection dosimetry. 126(1-4)
A compact and transportable water calorimeter has been developed and extensively tested in the intensive, collimated neutron field of the PTB. It has been applied for absorbed dose to water measurements in the neutron therapy field of the University
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2f400d0b92cda268eeb9512a1fa8863
https://pubmed.ncbi.nlm.nih.gov/17504749
https://pubmed.ncbi.nlm.nih.gov/17504749
Publikováno v:
Radiation and environmental biophysics. 44(3)
The purpose of this study was to systematically investigate how high doses of sparsely and densely ionizing radiations influence the proliferation time of lymphocytes in short-term cultures and, consequently, the observed frequencies of dicentric and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dfbed886297550ca405fddd8959432b
https://pubmed.ncbi.nlm.nih.gov/16273382
https://pubmed.ncbi.nlm.nih.gov/16273382
Publikováno v:
Physics in medicine and biology. 45(3)
Low-pressure proportional counters (LPPCs) with walls made from the elements C, Mg, Al, Si, Fe and Zr and from the chemical compounds A-150 plastic, AlN, Al2O3, SiO2 and ZrO2 were used to measure neutron fluence-to-kerma conversion coefficients at en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a491be6866b443adfbb6c6482a6a2093
https://pubmed.ncbi.nlm.nih.gov/10730963
https://pubmed.ncbi.nlm.nih.gov/10730963
Autor:
D, Frankenberg, H J, Brede, U J, Schrewe, C, Steinmetz, M, Frankenberg-Schwager, G, Kasten, E, Pralle
Publikováno v:
Radiation research. 151(5)
Yields of DNA double-strand breaks were determined in primary human skin fibroblasts exposed to 1H and 4He ions at various linear energy transfers (LETs) and to 15 MeV electrons as the reference radiation. The values obtained for the relative biologi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::87cefcf4dd2badb39fbca57eaa60120e
https://pubmed.ncbi.nlm.nih.gov/10319727
https://pubmed.ncbi.nlm.nih.gov/10319727