efn512m / efn010f molecular spectroscopy and reaction dynamics group iii rempi-tof mass spectrometry...
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EFN512M / EFN010FMolecular Spectroscopy and Reaction Dynamics
Group IIIREMPI-TOF mass spectrometryÍsak, Hafdís, Þorvaldur, Kári & Guðfinnur
Efni fyrirlesturs
• Búið er að fara ítarlega í fræðina á bakvið REMPI og TOF massagreina.
• Áhersla er lögð á úrvinnslu mæligagna og hermun með SimIon.
• Tækjunum ættu allir að vera kunnugir.
Mælingar
• Efni: H-Cl• Skannað yfir 20.972-21.062 cm-1 m.v. orku
einnar ljóseindar (Heildarorkubil 83.888-84.248 cm-1).
• Notað er (2+1) REMPI sem miðast við að tvær ljóseindir örva efnið og sú þriðja jónar það.
• Mældir voru 10.000 punktar (sem samsvara 10 μs) fyrir hvern 0,1 cm-1. Gögnin eru því 896x10.000 fylki.
Massaróf
H
CN2
35Cl
H35Cl
37Cl
H37Cl
H+ 1D-REMPI120x10
3
100
80
60
40
20
0
Inte
nsi
ty o
f H+
84.20x103
84.1584.1084.0584.0083.9583.90Energy (cm-1)
H
CN2
35Cl
H35Cl
37Cl
H37Cl
35Cl+ & 37Cl+ 1D-REMPI
300x103
200
100
0
Inte
nsi
ty
84.20x103
84.1584.1084.0584.0083.9583.90Energy (cm-1)
Cl35 Cl37
H
CN2
35Cl
H35Cl
37Cl
H37Cl
35Cl+ & H35Cl+ 1D-REMPI
300x103
200
100
0
Inte
nsi
ty
84.20x103
84.1584.1084.0584.0083.9583.90Energy (cm-1)
Cl35+HCl35+
H
CN2
35Cl
H35Cl
37Cl
H37Cl
H35Cl+ & H37Cl+ 1D-REMPI200
150
100
50
0
x103
84.2084.1584.1084.0584.0083.9583.90x10
3
HCl35 HCl37
2D-REMPI
84.20x103
84.15
84.10
84.05
84.00
83.95
83.90
En
erg
y (c
m-1
)
403020100Mw
Massaróf
H
CN2
35Cl
H35Cl
37Cl
H37Cl
Öll Rófin
250
200
150
100
50
0
x103
84.2084.1584.1084.0584.0083.9583.90x10
3
H Cl35 HCl35 Cl37 HCl37
200
150
100
50
0
x103
84.09684.09484.09284.09084.08884.08684.08484.082x10
3
H Cl35 HCl35 Cl37 HCl37
X1Σ+(0+)(11,0)
V1Σ+(0+)
H35Cl H37Cl
E
v´´=0
v´´=0
H+,35Cl+,H35Cl+ H+, 37Cl+, H37Cl+
Samanburður toppa fyrir H35Cl200x10
3
150
100
50
Inte
nsi
ty o
f HC
l35
+
84.20x103
84.1584.1084.0584.0083.9583.90Energy (cm-1)
Rotational Lines of the V1Σ+(0+)←←X1Σ+(0+)(11,0) Band System of H35Cl - Q(J) values
J Green, Bickel & Wallace** [cm-1] Mælingar [cm-1] Mismunur [cm-1]
0 84208,0 84208 01 84195,7 84196 -0,32 84171,6 84174 -2,43 84135,8 84140 -4,24 84089,2 84092 -2,85 84032,0 84031 16 83965,2 83966 -0,87 -- 83898 --
200x103
150
100
50
Inte
nsi
ty o
f HC
l35
+
84.20x103
84.1584.1084.0584.0083.9583.90Energy (cm-1)
Q(J)S(J)
Hermun með Simion
Simion • Spennur:– Repeller: 4100
V– Extractor: 1170
V– Lens: 250 V & 3
V
Mæling Hermun
tTOF (µs) ΔtTOF (µs) tTOF (µs) ΔtTOF (µs) SkekkjaH 1,704 0,85687535Cl 5,523 3,819 5,06933 4,21246 10,3%H35Cl 5,588 0,065 5,14124 0,07191 10,6%37Cl 5,654 0,066 5,21215 0,07091 7,4%H37Cl 5,714 0,060 5,28212 0,06997 16,6%
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