Hi there !

This is a quick readme to the complete data set and processing scripts for all the data used in the study - 
Non-contact, non-destructive mapping of thermal diffusivity and surface acoustic wave speed using transient grating spectroscopy" 
in the Review of Scientific Instruments, 2020.
Also on arxiv - arXiv:2002.01409v1.

Please feel free to contact the authors regarding any issues encountered -
Felix Hofmann (felix.hofmann@eng.ox.ac.uk)
Abdallah Reza (mohamed.reza@eng.ox.ac.uk)

Usage - The authors are happy for these codes to be used for NON-commercial work. Please just cite the above paper in Review of Scientific Instruments.


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Codes and data for each figure is in a separate folder. All are run in MATLAB 2019b. 
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Figure 1 

Sample TGS Trace  with fit

Raw data - helsinki_unimp1_vacmod_map1

Processing Code - map_fitting_2d_supplementary_plots.m


Figure 3

Processing Code - test_saw_silicon_tungsten.m 
Data files required are in the folder 



Figure 4


For the implanted sample - 

Raw data - helsinki_0_32dpa_timed_test2_16_12_19_25C_grating_11_6 
Processing Code - map_fitting.m
Processed Data - implanted__32_dpa_5hrs_test_analysis2_4_01_20_grating_11_6

Unimplanted sample - 

Raw data - tungsten_rect_calib_500C_test4_4_01_20_grating_11_6
Processing Code - spot_measurement_timed_fitting.m
Processed Data - tungsten_rect_calib_500C_test_room_temp_analysis2_4_01_20_grating_11_6 


The long_scans_plotting.m then uses the processed data and plots the long scans 
it uses the - thermal_diffus_temp_lit.mat data file for literature data 


Figure 6


Raw data folder has the TGS raw map data 

Fitting code - map_fitting_2d_large_map.m

 
plotting_maps.m then joins and plots the large map, using the processed data.


Figure 7


Raw Data - chris_sample1_map_7.mat

Processing / fitting code - map_fitting_2d_chris_magazzeni.m

Processed data - chris_sample1_map7_delay237_fftm_150 
which gives the map data and the map

For the sample traces - in and outside the weld 
map_fitting_2d_chris_magazzeni_diff_grain_trace_v2.m is the code
It uses the same raw data 


Figure 8

Raw Data - waite_tivzrhfta_vacmod_map1.mat

Fitting Code - map_fitting_2d_waite.m

which gives the processed data 
waite_tivzrhfta_vacmod_map1_analysis2


To plot the traces from different grains 

code - map_fitting_2d_waite_diff_grain_trace_v2.m
it uses the same raw data 


Figure 9

Raw Data - waite_sample_2_map1.mat

Processing Code - map_fitting_2d_waite.m
Processed Data - waite_sample_2_map1


The TGS fitting codes uses the supplementary functions leasqr.m gauss.m dfdp.m decay_inc_ampl.m given