%0 Report %1 �6pK3<�� %A Wanke, Michael C. %A Grine, Albert D. %A Mangan, Mike A. %A Chhabildas, Lalit C. %A Reinhart, William D. %A Thornhill, Tom F. %A Alexander, C. Scott %A Brown, Justin L. %A Breiland, William G. %A Shaner, Eric A. %A Miller, Paul A. %D 2007 %K HVI hypervelocity impact-flash spectroscopy %N SAND2007-0835 %T Advanced diagnostics for impact-flash spectroscopy on light-gas guns %U /brokenurl#www.sandia.gov/pulsedpower/prog_cap/pub_papers/070835.pdf %X This s tudy is b est ch arac teriz ed as new te chnology deve lopmen t for i mpl emen ting new senso rs to inve stig ate t he opt ical ch arac teri sti cs of a r apidly e xpanding deb ris c loud resu lt ing fro m hypervelo city im pact r egim es of 7 t o 11 km/ s. Our gas gun s const itu te a uniqu e tes t bed th at m atch ope rat ional condi tions re levant to hyperve loci ty i mpac t encoun tered in s pace engage ments . We have demons tra ted the use of (1) ter ahert z sen sors , (2 ) s il icon d iodes for vis ible reg ime s, (3) germ anium and InGaAs sensor s for the near in frared regi mes , and (4 ) t he Sand ia l igh tning d etec tors which a re s im ila r t o th e s il icon d iodes descr ibed in 2 . The comb inat ion a nd co mple menta ry use of al l t hese te chniques has the st rong po tent ial of “the rma lly” chara cter izing the ti me ­dependen t behav ior o f t he r adia ting debri s c loud. Comple ment ary spec troscop ic me asure ments p rovide t empe rature e st ima tes of t he i mpac t genera ted debr is by fi tt ing it s spec trum to a b lackbody radi ation func tion . Thi s debr is is ti me ­dependent as it s t ranspo rt/ expansion behavio r i s ch anging with t im e. The r apid expans ion behavior of the debris “cools” the cloud rapidly, changing its thermal temperature characteristics with time. A variety of sensors that span over a wide spectrum, varying from visible regime to THz frequencies, now gives us the potential to cover the impact over a broader temporal regime starting from high­ pressures (Mbar) high­ temperatures (eV) to low pressures (mbar) low temperatures (less than room temperature) as the debris expands and cools.

@techreport{�6]pK3<��, abstract = {This s tudy is b est ch arac teriz ed as new te chnology deve lopmen t for i mpl emen ting new senso rs to inve stig ate t he opt ical ch arac teri sti cs of a r apidly e xpanding deb ris c loud resu lt ing fro m hypervelo city im pact r egim es of 7 t o 11 km/ s. Our gas gun s const itu te a uniqu e tes t bed th at m atch ope rat ional condi tions re levant to hyperve loci ty i mpac t encoun tered in s pace engage ments . We have demons tra ted the use of (1) ter ahert z sen sors , (2 ) s il icon d iodes for vis ible reg ime s, (3) germ anium and InGaAs sensor s for the near in frared regi mes , and (4 ) t he Sand ia l igh tning d etec tors which a re s im ila r t o th e s il icon d iodes descr ibed in 2 . The comb inat ion a nd co mple menta ry use of al l t hese te chniques has the st rong po tent ial of “the rma lly” chara cter izing the ti me ­dependen t behav ior o f t he r adia ting debri s c loud. Comple ment ary spec troscop ic me asure ments p rovide t empe rature e st ima tes of t he i mpac t genera ted debr is by fi tt ing it s spec trum to a b lackbody radi ation func tion . Thi s debr is is ti me ­dependent as it s t ranspo rt/ expansion behavio r i s ch anging with t im e. The r apid expans ion behavior of the debris “cools” the cloud rapidly, changing its thermal temperature characteristics with time. A variety of sensors that span over a wide spectrum, varying from visible regime to THz frequencies, now gives us the potential to cover the impact over a broader temporal regime starting from high­ pressures (Mbar) high­ temperatures (eV) to low pressures (mbar) low temperatures (less than room temperature) as the debris expands and cools.}, added-at = {2013-10-16T19:51:54.000+0200}, author = {Wanke, Michael C. and Grine, Albert D. and Mangan, Mike A. and Chhabildas, Lalit C. and Reinhart, William D. and Thornhill, Tom F. and Alexander, C. Scott and Brown, Justin L. and Breiland, William G. and Shaner, Eric A. and Miller, Paul A.}, biburl = {https://www.bibsonomy.org/bibtex/2edb86b0f1e1a4803664d517b42c8f99e/knielson}, description = {SAND2007-0835 - 070835.pdf}, institution = {Sandia National Laboratories}, interhash = {1432f10de77103525d0ebf8d877ce5a5}, intrahash = {edb86b0f1e1a4803664d517b42c8f99e}, keywords = {HVI hypervelocity impact-flash spectroscopy}, month = {March}, number = {SAND2007-0835}, timestamp = {2013-10-16T19:51:54.000+0200}, title = {Advanced diagnostics for impact-flash spectroscopy on light-gas guns }, url = {/brokenurl#www.sandia.gov/pulsedpower/prog_cap/pub_papers/070835.pdf}, year = 2007 }