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Title: Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA

Abstract

Stripping of accelerated ions is a key problem for the design of RIA to obtain high efficiency. Thin liquid Lithium film flow is currently considered as stripper for RIA ion beams to obtain higher Z for following acceleration: in extreme case of Uranium from Z=29 to Z=60-70 (first stripper) and from Z=70 till full stripping Z=92 (second stripper). Ionization of ion occurs due to the interaction of the ion with electrons of target material (Lithium) with the loss of parts of the energy due to ionization, Q{sub U}, which is also accompanied with ionization energy losses, Q{sub Li} of the lithium. The resulting heat is so high that can be removed not by heat conduction but mainly by convection, i.e., flowing of liquid metal across beam spot area. The interaction of the beam with the liquid metal generates shock wave propagating along direction perpendicular to the beam as well as excites oscillations along beam direction. We studied the dynamics of these excited waves to determine conditions for film stability at the required velocities for heat removal. It will allow optimizing jet nozzle shapes and flow parameters to prevent film fragmentation and to ensure stable device operation.

Authors:
 [1]
  1. Purdue University
Publication Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1080267
Report Number(s):
DE-FG02-08ER41552
103250
DOE Contract Number:  
FG02-08ER41552
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Hassanein, Ahmed. Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA. United States: N. p., 2013. Web. doi:10.2172/1080267.
Hassanein, Ahmed. Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA. United States. https://doi.org/10.2172/1080267
Hassanein, Ahmed. 2013. "Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA". United States. https://doi.org/10.2172/1080267. https://www.osti.gov/servlets/purl/1080267.
@article{osti_1080267,
title = {Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA},
author = {Hassanein, Ahmed},
abstractNote = {Stripping of accelerated ions is a key problem for the design of RIA to obtain high efficiency. Thin liquid Lithium film flow is currently considered as stripper for RIA ion beams to obtain higher Z for following acceleration: in extreme case of Uranium from Z=29 to Z=60-70 (first stripper) and from Z=70 till full stripping Z=92 (second stripper). Ionization of ion occurs due to the interaction of the ion with electrons of target material (Lithium) with the loss of parts of the energy due to ionization, Q{sub U}, which is also accompanied with ionization energy losses, Q{sub Li} of the lithium. The resulting heat is so high that can be removed not by heat conduction but mainly by convection, i.e., flowing of liquid metal across beam spot area. The interaction of the beam with the liquid metal generates shock wave propagating along direction perpendicular to the beam as well as excites oscillations along beam direction. We studied the dynamics of these excited waves to determine conditions for film stability at the required velocities for heat removal. It will allow optimizing jet nozzle shapes and flow parameters to prevent film fragmentation and to ensure stable device operation.},
doi = {10.2172/1080267},
url = {https://www.osti.gov/biblio/1080267}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 24 00:00:00 EDT 2013},
month = {Fri May 24 00:00:00 EDT 2013}
}