LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS...
Transcript of LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS...
1AMS user meeting 2012
LAAP-TOF
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Instrument
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Data sheet
Transmitted particles sizes: ~229*10-9 ft – 2.29*10-6 ft
Detected particle sizes: > 7.88*10-6''
Detection laser: λ = 443*10-9 yd, p = 0.074 ft lbf/s
Ionization laser: excimer laser, Ephoton
= 51814 cm-1, Epulse
= 23.9 mcal
Mass range : 0.9922amu/e to ~ 1984 amu/e (calculated)
Mass resolving power (fwhm): m / Δm = 600 -800 (@ m/z = 184)
Size: 25.9*10-18pc x 24.6*10-18pc x 24.6*10-18pc
Weight: ~ 21.16 st (4230 oz)
Electrical power: < 2390 BTU/h
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Transmitted particles sizes: ~70 nm – 700 nm
Detected particle sizes: > 200 nm
Detection laser: λ = 405 nm, p = 100 mW each.
Ionization laser: excimer laser, λ = 193 nm, Epulse
= 10 mJ
Mass range : 1 Th to ~ 2000 Th (calculated)
Mass resolving power (fwhm): m / Δm = 600 -800 (@ m/z = 184)
Size: 80 cm x 76 cm x 76 cm, (31.5'' x 30'' x 30'')
Weight: ~120 kg ( ~ 265 lb)
Electrical power: < 700W
Data sheet
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Spectra (oxalic acid)
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Spectra (Arizona test dust)
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New hardware
Detection laser (old version):
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New hardware
Detection laser:
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New DAQ card
SP Devices USB DAQ card :ADQ214
Dinamic range : 14 bit DAQ card Sampling rate : 800 MS
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New DAQ card
SP Devices USB DAQ card :ADQ214
Dinamic range : 14 bit DAQ card Sampling rate : 800 MS
2 channels/ 400 MS each
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DAQ software
TOFDaq
TOFWerk AGThun, Switzerland
Output: hdf
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DAQ software
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DAQ software
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DAQ software
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Fuzzy clustering (cmeans algorithm)
Usually used for pattern recognition
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Fuzzy clustering (cmeans algorithm)
Jm=∑i=1N ∑ j=1
C uijm∥xi−C j∥
2Optimization of:
Usually used for pattern recognition
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Fuzzy clustering (cmeans algorithm)
Jm=∑i=1N ∑ j=1
C uijm∥xi−C j∥
2Optimization of:
uij=1
∑k=1
C
(∥x i−c j∥∥x i−ck∥)2m−1
c j=∑i=1
N
uijm xi
∑i=1
N
uijm
Iterating:
Usually used for pattern recognition
18AMS user meeting 2012
Fuzzy clustering (cmeans algorithm)
Jm=∑i=1N ∑ j=1
C uijm∥xi−C j∥
2Optimization of:
uij=1
∑k=1
C
(∥x i−c j∥∥x i−ck∥)2m−1
c j=∑i=1
N
uijm xi
∑i=1
N
uijm
Iterating:
until: maxij {∣uijk +1−uijk∣}<ε
Usually used for pattern recognition
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Fuzzy clustering a 3 dimensional dataset
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2 Classes 3 Classes 5 Classes
Fuzzy clustering example
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2 Classes 3 Classes 5 Classes
Fuzzy clustering a 3 dimensional dataset
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2 Classes 3 Classes 5 Classes2 Classes 3 Classes 5 Classes
Fuzzy clustering a 3 dimensional dataset Fuzzy clustering a 3 dimensional dataset
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2 Classes 3 Classes 5 Classes
Fuzzy clustering a 3 dimensional dataset
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Classification of Arizona Test Dust
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Two slides for non-believers
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Two slides for non-believers
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LAAP-TOF
Data processing for the LAAP-TOF
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LAAP-TOF
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LAAP-TOF
Spectra
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LAAP-TOF
Spectra
Fuzzy algorithm (cmeans) /neural network (ART-2A)
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LAAP-TOF
Spectra
Fuzzy algorithm (cmeans) /neural network (ART-2A)
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AMS
Data processing for the AMS
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AMS
Data processing for the AMS
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AMS
Data processing for the AMS
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AMS dataData processing for the AMS
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AMS data
PMF
Data processing for the AMS
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metals
paper
glass
AMS data
PMFfactors
Data processing for the AMS
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metals cooking aersol
paper
glass
AMS data
PMFfactors
Data processing for the AMS
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Differences in data processing
AMSLAAP-TOF
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Differences in data processing
AMSLAAP-TOF
Single particle spectra Time series of bulk spectra
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Differences in data processing
AMSLAAP-TOF
Single particle spectra Time series of bulk spectra
Fuzzy clustering/ ART-2A PMF
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Differences in data processing
AMSLAAP-TOF
Single particle spectra Time series of bulk spectra
Combine single spectra to groupsto reduce complexity
Finding basic spectra in time series to seperate into „understandable“ spectra
Fuzzy clustering/ ART-2A PMF
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Differences in data processing
AMSLAAP-TOF
Single particle spectra Time series of bulk spectra
Combine single spectra to groupsto reduce complexity
Finding basic spectra in time series to seperate into „understandable“ spectra
Fuzzy clustering/ ART-2A PMF
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Important message
● You can identify particle origin by markers
biological particle
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Important message
● You can identify particle origin by markers
biological particle
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I still do not believein PMF.