نتایج جستجو برای: cyclotron radiation

تعداد نتایج: 243782  

Journal: :Geophysical Research Letters 2023

By constructing an empirical model of the spectral and latitudinal distribution ion cyclotron waves on basis Cassini datasets, we investigate resonant interactions between radiation belt electrons at Saturn. Calculations based quasi-linear bounce-averaged diffusion coefficients show that Saturn can efficiently pitch angle scatter >∼1 MeV to tens into loss cone thereby inducing precipitation los...

2008
Mitchell C. Begelman Robert E. Ergun Martin J. Rees

We consider the production of electron cyclotron maser emission by lowdensity, highly magnetized plasmas in relativistic jets. The population inversion required to drive cyclotron maser instability could occur in localized, transient sites where hydromagnetic instabilities, shocks, and/or turbulence lead to magnetic mirroring along current-carrying flux tubes. The maser is pumped by the convers...

Ali Sattari Baratali Akbari Behrooz Fateh Hossein Afarideh Mohammad Hajisaeed Mohammad Shafiei

The radioisotope 67Ga (T 1/2 = 78 h) in extensively used as single photon marker for detecting the presence of malignancy and the diagnosis of inflammatory diseases. The high tumor specificity of carrier-free 67Ga make it one of the most interesting radionuclides in nuclear medicine for in vivo scanning studies. 67Ga is a cyclotron produced radioisotopes and is one of the radiopharmaceuti...

Journal: :Journal of Plasma Physics 2021

The behaviour of a collisional plasma that is optically thin to cyclotron radiation considered, and the distribution functions accessible it on various time scales in system are calculated. Particular attention paid limit which collision exceeds emission time, making electron function strongly anisotropic. Unusually for physics, operator can nevertheless be calculated analytically although far ...

Journal: :iranian journal of radiation research 0
a.r. jalilian radiopharmaceutical research and development lab (rrdl), nuclear science and technology research institute (nstri), tehran, iran m. tajik azad university, science and research branch, tehran, iran h. zandi azad university, science and research branch, tehran, iran j. garousi radiopharmaceutical research and development lab (rrdl), nuclear science and technology research institute (nstri), tehran, iran f. bolourinovin radiopharmaceutical research and development lab (rrdl), nuclear science and technology research institute (nstri), tehran, iran

background: oxytocin (ot) is a paracrine hormone with various biological activities and many sex organs in both sexes, as well as many tumor cells have shown to have related receptors. in this study the development of a receptor imaging tracer for possible tumor imaging has been described. materials and methods: ot was successively labeled with [67ga]-gallium chloride after conjugation with fre...

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