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Title: Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1299431
Grant/Contract Number:
DEFC0208ER54964; DEFG0293ER54197
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 10; Related Information: CHORUS Timestamp: 2017-06-24 17:01:12; Journal ID: ISSN 0741-3335
Publisher:
IOP Publishing
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Pusztai, István, Wilkie, George J., Kazakov, Yevgen O., and Fülöp, Tünde. Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles. United Kingdom: N. p., 2016. Web. doi:10.1088/0741-3335/58/10/105001.
Pusztai, István, Wilkie, George J., Kazakov, Yevgen O., & Fülöp, Tünde. Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles. United Kingdom. doi:10.1088/0741-3335/58/10/105001.
Pusztai, István, Wilkie, George J., Kazakov, Yevgen O., and Fülöp, Tünde. 2016. "Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles". United Kingdom. doi:10.1088/0741-3335/58/10/105001.
@article{osti_1299431,
title = {Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles},
author = {Pusztai, István and Wilkie, George J. and Kazakov, Yevgen O. and Fülöp, Tünde},
abstractNote = {},
doi = {10.1088/0741-3335/58/10/105001},
journal = {Plasma Physics and Controlled Fusion},
number = 10,
volume = 58,
place = {United Kingdom},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1088/0741-3335/58/10/105001

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • Estimates of risk of stochastic effects from contamination with [alpha]-particle-emitting radionuclides are based on equivalent doses which take into account the RBE of the high-LET radiation. It is assumed that the RBEs for deterministic effects are considerably less than those for stochastic effects. However, the offspring of mice injected with 30 Bq g[sup [minus]1] [sup 239]Pu at 13 days gestation develop a persistent deficit in hemopoietic stem cells which is primarily the result of damage to their regulatory microenvironment. Their spatial distribution in the marrow is also perturbed, and recent observations on those mice suggested a considerably higher factor thanmore » 20. To define a more realistic RBE for hemopoiesis, the effects of external [gamma] irradiation during the fetal development period have been compared directly with those of [sup 239]Pu incorporated via placental transfer on the development of hemopoietic tissue. Pregnant mice were irradiated with [sup 60]Co [gamma] rays (a) continuously from day 13 of gestation to birth at 0.15 or 0.6 Gy/day; (b) six repeated acute doses (0.6 Gy/min) at 0.1 or 0.3 Gy from day 13 of gestation; (c) one acute dose of 0.6 or 1.8 Gy on day 15 of gestation. The spatial distribution of hemopoietic stem cells in 8-week-old offspring was then determined and compared to that resulting from [alpha]-particle irradiation. In each case, the higher dose was required to match the results for [alpha] particles, suggesting an RBE for developing hemopoiesis of 250-360 compared to a continuous [gamma]-ray dose and a rather lower value of 130-180 compared to a single acute dose of [gamma] rays. This contrasts greatly to values for direct irradiation of the stem cells but argues that the effective RBE, measured for long-term effects in vivo, is the more realistic. It is concluded that an all-embracing factor can be grossly misleading and can greatly underestimate the risks of exposure to [alpha] particles. 21 refs., 3 figs., 1 tab.« less