Sensors and Lasers
c. "Magnetic gradiometers" as follows: 1. "Magnetic gradiometers" using multiple "magnetometers" specified in 6.A.6.a.; 2. Fibre optic "intrinsic magnetic gradiometers" having a magnetic gradient field 'sensitivity' less (better) than 0.3 nT/m (rms) per square root Hz; 3. "Intrinsic magnetic gradiometers", using "technology" other than fibre-optic "technology", having a magnetic gradient field 'sensitivity' less (better) than 0.015 nT/m (rms) per square root Hz;
| Reference | Parameter | Threshold |
|---|---|---|
| 6A006 | intrinsic magnetic gradiometers" having a magnetic gradient field 'sensitivity' | < 0.3 nT/m |
| 6A006 | having a magnetic gradient field 'sensitivity' | < 0.015 nT/m |
| 6A006.a.1.a | and having a ‘sensitivity’ | < 50 fT |
| 6A006.a.1.b | QUID systems having an in-motion-magnetometer ‘sensitivity’ | < 20 pT |
| 6A006.a.2 | ion (proton/Overhauser) "technology" having a ‘sensitivity’ | < 20 pT |
| 6A006.a.3 | ometers" using fluxgate "technology" having a ‘sensitivity’ | < 10 pT |
| 6A006.a.4.a | 05 nT (rms) per square root Hz at frequencies of | < 1 Hz |
| 6A006.a.4.b | ) per square root Hz at frequencies of 1 Hz or more but not | > 10 Hz |
| 6A006.a.4.b | (rms) per square root Hz at frequencies of 1 Hz or more but | <= 10 Hz |
| 6A006.a.4.c | 1 × 10^–4 nT (rms) per square root Hz at frequencies | > 10 Hz |
| 6A006.a.5 | Fibre optic "magnetometers" having a ‘sensitivity’ | < 1 nT |
| 6A006.b | Underwater electric field sensors having a ‘sensitivity’ | < 8 nanovolt |
| 6A006.c.2 | radiometers" having a magnetic gradient field ‘sensitivity’ | < 03 nT/m |
| 6A006.c.3 | having a magnetic gradient field ‘sensitivity’ | < 0015 nT/m |
6A006.a"Magnetometers" and subsystems as follows:
6A006.a.1"Magnetometers" using "superconductive" (SQUID) "technology" and having any of the following:
6A006.a.1.aSQUID systems designed for stationary operation, without specially designed subsystems designed to reduce in-motion noise, and having a ‘sensitivity’ equal to or less (better) than 50 fT (rms) per square root Hz at a frequency of 1 Hz; or
6A006.a.1.bSQUID systems having an in-motion-magnetometer ‘sensitivity’ less (better) than 20 pT (rms) per square root Hz at a frequency of 1 Hz and specially designed to reduce in-motion noise;
6A006.a.2"Magnetometers" using optically pumped or nuclear precession (proton/Overhauser) "technology" having a ‘sensitivity’ less (better) than 20 pT (rms) per square root Hz at a frequency of 1 Hz;
6A006.a.3"Magnetometers" using fluxgate "technology" having a ‘sensitivity’ equal to or less (better) than 10 pT (rms) per square root Hz at a frequency of 1 Hz;
6A006.a.4Induction coil "magnetometers" having a ‘sensitivity’ less (better) than any of the following:
6A006.a.4.a0,05 nT (rms) per square root Hz at frequencies of less than 1 Hz;
6A006.a.4.b1 × 10^–3 nT (rms) per square root Hz at frequencies of 1 Hz or more but not exceeding 10 Hz; or
6A006.a.4.c1 × 10^–4 nT (rms) per square root Hz at frequencies exceeding 10 Hz;
6A006.a.5Fibre optic "magnetometers" having a ‘sensitivity’ less (better) than 1 nT (rms) per square root Hz;
6A006.bUnderwater electric field sensors having a ‘sensitivity’ less (better) than 8 nanovolt per metre per square root Hz when measured at 1 Hz;
6A006.c"Magnetic gradiometers" as follows:
6A006.c.1"Magnetic gradiometers" using multiple "magnetometers" specified in 6A006.a.;
6A006.c.2Fibre optic "intrinsic magnetic gradiometers" having a magnetic gradient field ‘sensitivity’ less (better) than 0,3 nT/m rms per square root Hz;
6A006.c.3"Intrinsic magnetic gradiometers", using "technology" other than fibre-optic "technology", having a magnetic gradient field ‘sensitivity’ less (better) than 0,015 nT/m rms per square root Hz;
6A006.d"Compensation systems" for magnetic or underwater electric field sensors resulting in a performance equal to or better than the specified parameters of 6A006.a., 6A006.b. or 6A006.c.;
6A006.eUnderwater electromagnetic receivers incorporating magnetic field sensors specified in 6A006.a. or underwater electric field sensors specified in 6A006.b.
Decontrol note
Les magnétomètres destinés exclusivement à l’enseignement ou à des applications civiles classiques (par exemple, prospection minière non sensible) peuvent être exemptés, sous réserve d’une déclaration d’usage final appropriée.
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