Data Providers: Satellite: SEET Radiation Accumulated Dose By Thickness

Computes the radiation dose as it accumulates over time for the requested time interval(s), using the step size to perform the numerical integration of dose rate with time. The report is divided into subsections, where each subsection corresponds to a different shielding thickness. Valid for vehicles whose central body is earth.

Name	Dimension	Type	Description
Time	DateFormat	Real Number	Time.
Electron dose	RadiationDose	Real Number	The accumulated radiation dose due to electrons for the shielding thickness indicated, at the given time. Valid when using NASA or CRRES models.
Electron-Bremsstrahlung dose	RadiationDose	Real Number	The accumulated radiation dose due to Bremsstrahlung electrons, at the given time. Valid when using NASA or CRRES models.
Proton dose	RadiationDose	Real Number	The accumulated radiation dose due to protons for the shielding thickness indicated, at the given time. Valid when using NASA or CRRES models.
Combined dose	RadiationDose	Real Number	The accumulated total radiation dose from all constituents, at the given time.
Mag field intensity	MagneticFieldUnit	Real Number	The magnitude of the magnetic field at the vehicle's location.
Dipole L-shell parameter	Unitless	Real Number	The L value for the field line passing through the vehicle's location computed using the dipole approximation to the magnetic field. For a dipole field line, the L value corresponds to the distance, measured in earth mean radii, at the point on the field line at the magnetic equator. (For a dipole field, this point is also the furthest extent of the field line from the earth.)
McIlwain L-shell parameter	Unitless	Real Number or Text	A measure that indicates a particle's drift shell in the magnetic field at the vehicle's location, as defined by Carl McIlwain (J. Geophys. Res. 1961). The value is computed as a function of several magnetic invariants along a field line and thus its computation requires field line tracing. It is not strictly a constant over the entire field line. In cases where the field line is close to the dipole field line (i.e., the field line traced using only the dipole component of the magnetic field model), the value will be close to the dipole L-shell parameter.
McIlwain Abs(L-shell) parameter	Unitless	Real Number or Text	The absolute value of the McIlwain L-shell parameter
B/Beq	Unitless	Real Number or Text	The ratio of the magnetic intensity at the vehicle's location to the minimum magnetic intensity along the field line through the vehicle's location.
Beq	MagneticFieldUnit	Real Number or Text	The minimum magnetic intensity along the field line through the vehicle's location. The minimum value occurs at the magnetic equator, at the furthest extent of the field line from the earth.
Lat	LatitudeUnit	Real Number	The detic latitude (i.e., angle between the detic subpoint's surface normal vector and the XY plane.)
Lon	LongitudeUnit	Real Number	The detic longitude (i.e., angle from the X-axis locating the projection of the detic subpoint's surface normal vector onto the XY plane.) Longitude increases in the direction found using the right-hand rule about the Z-axis.
Alt	DistanceUnit	Real Number	The altitude value (i.e., magnitude of the relative position vector between the object and its detic subpoint).
15 day Avg Ap	Unitless	Real Number	The average of the daily Ap value, over the previous 15 days. The Ap value is set according to the settings on the SEET radiation panel. When using a flux file to set Ap, the 15 day average is computed for each day and then the table of values is interpolated to determine the value at the given time.

Name

Dimension

Type

Description

Time

DateFormat

Real Number

Time.

Electron dose

RadiationDose

Real Number

The accumulated radiation dose due to electrons for the shielding thickness indicated, at the given time. Valid when using NASA or CRRES models.

Electron-Bremsstrahlung dose

RadiationDose

Real Number

The accumulated radiation dose due to Bremsstrahlung electrons, at the given time. Valid when using NASA or CRRES models.

Proton dose

RadiationDose

Real Number

The accumulated radiation dose due to protons for the shielding thickness indicated, at the given time. Valid when using NASA or CRRES models.

Combined dose

RadiationDose

Real Number

The accumulated total radiation dose from all constituents, at the given time.

Mag field intensity

MagneticFieldUnit

Real Number

The magnitude of the magnetic field at the vehicle's location.

Dipole L-shell parameter

Unitless

Real Number

The L value for the field line passing through the vehicle's location computed using the dipole approximation to the magnetic field. For a dipole field line, the L value corresponds to the distance, measured in earth mean radii, at the point on the field line at the magnetic equator. (For a dipole field, this point is also the furthest extent of the field line from the earth.)

McIlwain L-shell parameter

Unitless

Real Number or Text

A measure that indicates a particle's drift shell in the magnetic field at the vehicle's location, as defined by Carl McIlwain (J. Geophys. Res. 1961). The value is computed as a function of several magnetic invariants along a field line and thus its computation requires field line tracing. It is not strictly a constant over the entire field line. In cases where the field line is close to the dipole field line (i.e., the field line traced using only the dipole component of the magnetic field model), the value will be close to the dipole L-shell parameter.

McIlwain Abs(L-shell) parameter

Unitless

Real Number or Text

The absolute value of the McIlwain L-shell parameter

B/Beq

Unitless

Real Number or Text

The ratio of the magnetic intensity at the vehicle's location to the minimum magnetic intensity along the field line through the vehicle's location.

Beq

MagneticFieldUnit

Real Number or Text

The minimum magnetic intensity along the field line through the vehicle's location. The minimum value occurs at the magnetic equator, at the furthest extent of the field line from the earth.

Lat

LatitudeUnit

Real Number

The detic latitude (i.e., angle between the detic subpoint's surface normal vector and the XY plane.)

Lon

LongitudeUnit

Real Number

The detic longitude (i.e., angle from the X-axis locating the projection of the detic subpoint's surface normal vector onto the XY plane.) Longitude increases in the direction found using the right-hand rule about the Z-axis.

Alt

DistanceUnit

Real Number

The altitude value (i.e., magnitude of the relative position vector between the object and its detic subpoint).

15 day Avg Ap

Unitless

Real Number

The average of the daily Ap value, over the previous 15 days. The Ap value is set according to the settings on the SEET radiation panel. When using a flux file to set Ap, the 15 day average is computed for each day and then the table of values is interpolated to determine the value at the given time.