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Title: Metal powder absorptivity: Modeling and experiment

Here, we present results of numerical modeling and direct calorimetric measurements of the powder absorptivity for a number of metals. The modeling results generally correlate well with experiment. We show that the powder absorptivity is determined, to a great extent, by the absorptivity of a flat surface at normal incidence. Our results allow the prediction of the powder absorptivity from normal flat-surface absorptivity measurements.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-682544
Journal ID: ISSN 0003-6935; APOPAI
Grant/Contract Number:
AC52-07NA27344; 15-ERD-037
Type:
Accepted Manuscript
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 55; Journal Issue: 23; Journal ID: ISSN 0003-6935
Publisher:
Optical Society of America (OSA)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; inhomogeneous optical media; ray trajectories in inhomogeneous media; artificially engineered materials
OSTI Identifier:
1342030
Alternate Identifier(s):
OSTI ID: 1286297