Additional SIMS Map of MOS 1213 Chip F Crater 3

Impact feature information

Experiment A0201
Surface ID 1213 (preflight and postflight images)
Discharge # 3
LDEF Location: Bay C Row 3
Coordinates [mm] x 1130.0 +-30.0 y 162.0 +-30.0
JSC ID N/A 1213
Surface Description: MOS detector, trailing edge
Feature Description: laboratory impact induced discharge
Origin Description: laboratory hypervelocity impact, forsterine part.
elliptic central crater diameter: 13 by 11 micrometers
discharge diameter: 55 micrometers
Photos available:
- SEM
Analyses performed:
- SIMS images
Notes: short IMG file due to storage problems, loss of most machine parameters and image 8 (mass 52, Cr?), POST-RETRIEVAL IMPACT EXPERIMENTS

Feature Image

SIMS Images

Below are the SIMS images of this feature. A thumbnail image overview is available, too. The analysis was performed on 00-00-1980. The following mass numbers were imaged:
27, 56, 56, 24, 12, 23, 39

Analytical Conditions:

These parameters directly affect spectrometer signal intensities.
Primary beam:

Gas and polarity: O+
Primary Acceleration Voltage: 15 kV
Secondary Acceleration Voltage: +4.5 kV
Primary beam current: ? nA
Raster size: ? (range ?, pot setting ?)

Secondary beam:

Polarity: +
Transfer Optics Setting: ?
Energy slit setting: ?
Energy slit translation: ?
Entrance slit setting: ?
Exit slit setting: ?
Contrast Diaphragm: 3 (150 micrometers)
Field Aperture: ?
Imaged Area: ?
Image Pixel Size: 256 x 256 (aspect ratio correction: multiply y by 0.83)
Channel plate ID: 1

Image 1, Al (Mass 27)

signal intensity scale: 0 -> 232

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.

Image Conditions

These parameters directly affect image intensities.

Number of frames taken: 5
Channel Plate Gain setting: 0.0
Channel Plate ID: 1
total count rate: 1877357
max count: 232
species classification positive
sensitivity factor for material implanted in Si matrix: 36.0000
operator note "used higher mass" in notebook

Image 2, Mass 56 (Si2)
signal intensity scale: 0 -> 466

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.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 250
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 1210738
max count: 466
species classification probable
sensitivity factor for material implanted in Si matrix: 1.0000
operator note "used lower mass" in notebook

Image 3, Mass 56 (Fe)
signal intensity scale: 0 -> 570

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.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 1000
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 271977
max count: 570
species classification probable
sensitivity factor for material implanted in Si matrix: 1.0000

Image 4, Mass 24 (Mg)
signal intensity scale: 0 -> 3348

-------------------------------------------------------------------------------- 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.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 500
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 285300
max count: 3348
species classification probable
sensitivity factor for material implanted in Si matrix: 18.0000

Image 5, Mass 12 (C)
signal intensity scale: 0 -> 169

-------------------------------------------------------------------------------- Resolution Element Interferents (m/Dm) Comments -------------------------------------------------------------------------------- 12C 24Mg2+,*11BH <1604 resolved, non-coincident with Mg distribution -------------------------------------------------------------------------------- NOTE: An asterisk (*) means that these species were in fact observed on Hi-Res Mass Spectra of a particular mass on the Standard.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 1000
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 235302
max count: 169
species classification probable
operator note "used lower mass" in notebook

Image 6, Mass 23 (Na)
signal intensity scale: 0 -> 617

-------------------------------------------------------------------------------- % 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.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 500
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 629816
max count: 617
species classification probable
sensitivity factor for material implanted in Si matrix: 139.0000
operator note "used lower mass" in notebook

Image 7, Mass 39 (K)
signal intensity scale: 0 -> 241

-------------------------------------------------------------------------------- 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.

Image Conditions
These parameters directly affect image intensities.

Number of frames taken: 500
Channel Plate Gain setting: 2.4
Channel Plate ID: 1
total count rate: 81271
max count: 241
species classification probable
sensitivity factor for material implanted in Si matrix: 125.0000
operator note "used lower mass" in notebook

retrieve SIMS data file get C source code
IDE database home page Back to surfaces page
Klaus G. Paul, 7-12-1994