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Trapped Radiation ENvironment model Development

UD328

[ Name | Synopsis | Arguments | Description | Diagnostics | Common Blocks | Dependencies | See Also | Reported Bugs | Examples ]

Name

    Subroutine UD328 - evaluate the second derivative of B

Synopsis

 
      RECORD /zgeo/ mgp
      REAL*8 sderv     
      INTEGER*4 ifail

      CALL UD328 (mgp,sderv,ifail)
   

Arguments

    mgp
    geographic position [in]
    sderv
    second derivative [out]
    ifail
    Error flag (see diagnostics) [out]

Description

    The subroutine UD328 computes at the geocentric location mgp the value of
    [Eq]
    where s is the arc length along the magnetic field line passing through the position mgp, and B is the magnetic field intensity.

History

    The subroutine UD328 does not exist in version 1.05 and earlier.

Diagnostics

Common Blocks

    UC160, general constants
    UC170, temporary magnetic field line

Dependencies

Called by

    UD321, evaluate a time integral over a magnetic field line

Calls

    UF423, Runge Kutta step
    UM530, evaluate the magnetic field vector
    UT999, radius of curvature in a dipolar magnetic field

See also

    None

Reported Bugs

    None

Examples

    None