Week the First

Looking at temp step data for liquid Cu43Al12Zr45 system [STL13039], produced the following plots:

cu43al12zr45 g(r) temp steps [title says S(q), should be g(r)]

cu43al12zr45 S(q) temp steps

Just starting to delve into glassy data for same composition from STL13080. Trouble adjusting params to get smooth results, but general shape of S(q) comes through and follows pattern seen among temps in liquid despite being glassy.

cu43al12zr45 S(q) glassy 200

Question: is it okay to use darks from the beginning of a file of “empty” data if there are none at end?

Site doesn’t allow upload of .txt files (really, security issues?) so here are logs so far…

06/17/2014
Cu43Al12Zr45
STL13038 – not processed

WashU (Kelton)    008    26    Cu43Al12Zr45    3    50.56    50.5    6/14/2013    23:46    Processed    STL13039    Yes    High temp and undercooled step data, free cool x-ray and density data

Used Empty at 1fps associated with STL13039
Frames 10-30

First exploration:

Look at hold, 900
Darks 28,29

exploration of first peak heights S(q1) at different temps:
900: 2.7
950: 2.65
1000: 2.61
1050: 2.57
1250: 2.43
1300: 2.41

06/18/2014

Looking at step data for temps 850-1300 C
Goal: I(q), S(q), G(r)/g(r)
Using 1fps empty from inc4
Empty frames: 10-29
Empty darks: 1-8
For now only combining 1 frame (#10)
Using I(q) Settings -> Dark = 1, Bg = 1.00306, Empty Dark = 1 as loaded from hist file

850
dark: 28-29

900
dark: 28-29

950
dark: 28-29

1000
dark: 28-29

1050
dark: 28-29

1100
dark: 28-29

1150
dark: 28-29

1200
dark: 28-29

1250
dark: 28-29

1300
dark: 22-29 (different b/c came from longer hold at 1300)

06/20/2014

STL13039
Made plots of S(q) and g(r) for Cu43Al12Zr45 temp steps 850-1300 C.

STL13080
started looking at glass data

empty (inc3_700empty): 8-70
empty dark: 1-6

inc1_hold_200
dark: 67-69
played with adjusting weights, couldn’t find anything too great (forgot to record ones used, bad me!).
still very choppy but general shape is clear for S(q) (gets worse in transform).
Made plot comparing with 850 and 1300 C liquid data, seems to fit into that trend despite phase change,
i.e. q1 and S(q1) increase with temperature.