-------------------------------------------------------------------------------- Element Comments -------------------------------------------------------------------------------- 16O Primary ion species. -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
-------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 23Na 30SiO2+ 3.10 -4222 not resolvable, low abundance. Na distri- bution had to be non-co- incident with high con- centration of the Si distribution for a positive ID. Looked for NaH (not resolvable from 12C2) and/or NaO (not resolvable from 27AlC) in samples with high Si. *46Ti2+,46Ca2+ <1776 resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
-------------------------------------------------------------------------------- Resolution Element Interferents (m/Dm) Comments -------------------------------------------------------------------------------- 24Mg *48Ti2+,48Ca2+,*23NaH+,12C2 <2731 resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
NOTE: CHANNEL PLATE GAIN AND PRIMARY BEAM CURRENT WAS REDUCED SUBSTANTIALLY ON Aluminum SUBSTRATES. -------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 27Al *26MgH 11.0 +3042 moderate abundance, idenitfied Al line if sample with low Al 54Cr2+,*13C15N,*12C2H3,54Fe2+ <2298 resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
NOTE: USED 28SI ON NON-SI SUBSTRATES. -------------------------------------------------------------------------------- Resolution Element Interferents (m/Dm) Comments -------------------------------------------------------------------------------- 28Si *56Fe2+,*27AlH,*12CO,12C2H4 <2957 resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
-------------------------------------------------------------------------------- Resolution Element Interferents (m/Dm) Comments -------------------------------------------------------------------------------- 39K *27AlC,23NaO,12C3H3 <2190 resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
-------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 40Ca 40K 0.012 +28,000 not resolvable, very low abundance. 39KH 93.1 +4470 not resolvable, used 44Ca (SiO resolvable interference) or non- coinci-dence with K dis- tribution *28SiC,*24MgO,27Al13C, <2993 resolved 12C2O,12C3H4 -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
NOTE: 28Si2 and 40CaO are not resolvable among themselves and appear as one peak to the right of the 56Fe peak. -------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 56Fe --AND-- 56Si2 55MnH 99.9 +5118 not resolvable, unlikely to be present without Fe *28Si2,44CaC,*40CaO,29SiAl, <2956 resolved 40KO,32SC2,24MgO2,C4H6 -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
NOTE: THIS IMAGE IS MOST LIKELY A COMBINATION OF 58Si2, Si2H, Si2H2, FeH, and (only if present) 58Ni. NOTE: Ni MUST be NON-COINCIDENT with Fe AND Si (unlikely if it is present) for POSITIVE, QUANTITATIVE IDENTIFICATION. It should be possible to identify Ni using measured responses for non- resolvable interferences and their parent elemental isotopes -------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 58Ni 58Fe 0.33 -28,000 not resolvable, very low (68.3%) abundance 57FeH 2.19 +7352 not resolvable, low abundance 58Si2 5.92 +3777 not resolvable -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
NOTE: MOST MASS 64 IMAGES HAVE A HIGH CONTRIBUTION FROM TiO -------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 64Zn 64Ni 1.08 -54,000 not resolvable, Ni must have non-coincident distribution *63CuH 69.1 +7730 not resolvable, Cu must have non-coincident distribution 52CrC 82.8 +5623 not resolvable, Cr must have non-coincident distribution *48TiO 73.8 +4660 not resolvable, Ti must have non-coincident distribution. Very likely to be present if Ti abundant. 32S2 90.3 +4262 not resolvable, S must have non-coincident distribution *48CaO 0.185 +3493 resolvable with diffi- culty, very low abun- dance *24Mg40Ca 76.3 +3408 resolvable with diffi- culty, Zn must have non- coincident distribution with respect to both Mg and Ca for posi- tive identification SO2,40CaC2,40KC2,24Mg2O, <1951 resolved 28SiC3,64O4,C4O,C5H4 -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
Non-standard Mass
-------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 107Ag 107Cr2 0.46 -4224 not resolvable, very low abundance 107MoC 10.7 -27,000 not resolvable, unlikely to be present 75AsO2 99.5 16,000 not resolvable, likely to be present on Au substrates -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
-------------------------------------------------------------------------------- % isotopic Resolution Element Interferents abundance (m/Dm) Comments -------------------------------------------------------------------------------- 197Au 181TaO 99.7 -7432 not resolvable, Ta thin films were present on LDEF 197Zn3,197Mo2,197Si7 <1523 easily resolved -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.
Only identifiable masses with the same channel plate gain value and ID may be displayed. The plot shows data points with Relative Sensitivity Factors for both material implanted in a silicon matrix and material implanted in a lunar analog glass matrix applied to them. When comparing the values of the data file available for this feature with the data of another feature, all instrument and image acquisition parameters must be the same to make any quantitative comparison of these two features. The values in the data file are shift-corrected pixel counts summed over the entire area inside the box and divided by the box area. 48Ti signals are corrected for 48Ca (0.185abundance, not resolvable). Please refer to the element classification information for the interpretation of this plot.
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Klaus G. Paul, 7-13-1994