IMP-8 Cosmic Ray Nuclear Composition Experiment

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This home page provides listing and plotting of 15-min. resolution data from the Charged Particle Nuclear Composition Experiment, from the IMP-8 spacecraft. These ASCII format data (as they were provided by University of Chicago) are placed at NSSDC's anonymous FTP site nssdcftp.gsfc.nasa.gov in directory spacecraft_data/imp/imp8/particles_uchi/15min_asci/. At this directory a user can find the detailed descriptions of the experiment, data processing,etc., as well as the format of the data records.

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Word         Description 
07    Coverage (seconds) for Rate #01: L1NL2        
08    Counts for Rate #01 : L1NL2                   
09    Coverage (seconds) for Rate #02: L1H1NL2      
10    Counts for Rate #02 : L1H1NL2                 
11    Coverage (seconds) for Rate #03: L1H2NL2      
12    Counts for Rate #03 : L1H2NL2                 
13    Coverage (seconds) for Rate #04: L1H3NL2      
14    Counts for Rate #04 : L1H3NL2                 
15    Coverage (seconds) for Rate #05: L1L2        
16    Counts for Rate #05 : L1L2                   
17    Coverage (seconds) for Rate #06: R1          
18    Counts for Rate #06 : R1                     
19    Coverage (seconds) for Rate #07: R2          
20    Counts for Rate #07 : R2                     
21    Coverage (seconds) for Rate #08: R3          
22    Counts for Rate #08 : R3                     
23    Coverage (seconds) for Rate #09: R4          
24    Counts for Rate #09 : R4                     
25    Coverage (seconds) for Rate #10: RCK         
26    Counts for Rate #10 : RCK                    
27    Coverage (seconds) for Rate #11: RCKF        
28    Counts for Rate #10 : RCKF                   
29    Coverage (seconds) for Rate #12: R6          
30    Counts for Rate #11 : R6                     
31    Coverage (seconds) for Rate #13: HZHE        
32    Counts for Rate #12 : HZHE                   
33    Total number of PH events for ID2            
34    Total number of PH events for ID3            
35    Total number of PH events for ID4            
36    Total number of PH events for ID5 (IDCK)     
37    Counts for PH Box #01: ID2 Electrons  (0.7 - 2.0 MeV)
38    Counts for PH Box #02: ID2 Protons (11.24 - 20.00 MeV)
39    Counts for PH Box #03: ID2 Protons  (11.24 - 12.62 Mev)
40    Counts for PH Box #04: ID2 Protons  (12.62 - 16.18 MeV)
41    Counts for PH Box #05: ID2 Protons  (16.18 - 20.00 MeV
42    Counts for PH Box #06: ID2 Helium  (10.90 - 19.95 MeV/nuc)
43    Counts for PH Box #07: ID2 Helium  (10.90 - 12.89 MeV/nuc)
44    Counts for PH Box #08: ID2 Helium  (12.89 - 16.35 MeV/nuc)
45    Counts for PH Box #09: ID2 Helium  (16.35 - 19.95 MeV/nuc)
46    Counts for PH Box #10: ID3 Electrons  (2.0 - 12 MeV)
47    Counts for PH Box #11: ID3 Protons  (20.00 - 29.75 MeV)
48    Counts for PH Box #12: ID3 Helium  (19.95 - 25.36 MeV/nuc)
49    Counts for PH Box #13: ID4 Electrons  (12 - 50 MeV)
50    Counts for PH Box #14: ID4 Protons  (29.75 - 94.78 MeV)
51    Counts for PH Box #15: ID4 Protons  (29.75 - 40.10 MeV)
52    Counts for PH Box #16: ID4 Protons  (40.10 - 50.90 MeV)
53    Counts for PH Box #17: ID4 Protons  (50.90 - 62.55 MeV)
54    Counts for PH Box #18: ID4 Protons  (62.55 - 74.50 MeV)
55    Counts for PH Box #19: ID4 Protons  (74.50 - 94.78 MeV)
56    Counts for PH Box #20: ID4 Helium  (25.48 - 94.81 MeV/nuc)
57    Counts for PH Box #21: ID4 Helium  (25.48 - 30.61 MeV/nuc)
58    Counts for PH Box #22: ID4 Helium  (30.61 - 42.03 MeV/nuc)
59    Counts for PH Box #23: ID4 Helium  (42.03 - 55.40 MeV/nuc)
60    Counts for PH Box #24: ID4 Helium  (55.40 - 69.64 MeV/nuc)
61    Counts for PH Box #25: ID4 Helium  (69.64 - 84.32 MeV/nuc)
62    Counts for PH Box #26: ID4 Helium  (84.32 - 94.81 MeV/nuc)
63    Counts for PH Box #27: ID4 CNO (~25 - 250 MeV/nuc)
64    Sun-Earth-IMP angle (Degrees)

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If you have any questions/comments about FTPBrowser, contact:
Dr. Natalia Papitashvili, Mail Code 612, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

< NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility