LArTPC Document 532-v1

Papers on Electron Drift and Diffusion in Liquid Argon

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Kirk McDonald
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Kirk McDonald
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02 Feb 2010, 11:27
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02 Feb 2010, 11:27
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02 Feb 2010, 15:10
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Data on electron diffusion in liquid argon are sparse. ICARUS uses the "Einstein" value of D = k T / e mu = 4 cm^2/s, for T = 87K and mu ~ 500 cm^2/s-V = WEAK FIELD mobility. The microBooNE proposal uses D ~ 15 cm^2/s, quoted by Doke, based on Shibamura et al. My interpretation of Derenzo et al. is that they observed D = 13 cm^2/s. Note that the measurements are for TRANSVERSE diffusion, while the theory is more relevant for LONGITUDINAL diffusion. Alvarez group memos are accessible at
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