5.1 |
2.5e-5 |
6.1 |
2.8e-5 |
7.1 |
3.8-5 |
8.7 |
3.8-5 |
11 |
4e-5 |
13 |
4.5e-5 |
16 |
4.4e-5 |
18 |
4.6e-5 |
21 |
4.5e-5 |
25 |
4.6e-5 |
30 |
3.8e-5 |
Energy( MeV nucl-1) |
Flux [ cm-2 s-1 sr-1 MeV nucl- |
ISOIS: HET B |
1 ] |
( blue color line) |
ISOIS: HET B |
( blue color line) |
16 |
4.4e-5 |
18 |
4.2e-5 |
21 |
3.9e-5 |
25 |
3.6e-5 |
30 |
3.5e-5 |
35 |
3.4e-5 |
41 |
3.4e-5 |
50 |
3.1e-5 |
( 6)
( 7)
( 8)
( 9)
( 10)
� � ���
� � 2570E �� � �. � �h�
�. � 2570 �E � � � ���� h ��
� �
� � ���� � 1540E �
�� � ∗ � ∗. �� �h�
�.
� 1540 �E �� � �
� � ��� �� � � � 231Z� E �
��. �� �h� � 231Z � �E � �. �� �
����. � �
�. � h��
���. ���� �
��. �� h��
� � ���� � 2570E �
�� � ∗ � � ∗. � ��h� � 2570 �0.15 �. �� � ���� h � �.
� 1.08�E �� � � � 0.15 �. �� ��
� � ���� � 1540E �.
�� �� ∗ �� �� ∗ �h�
�.
� 1540 �E �� � �
����. � �
�. � h� � �E � � � �. �� �. �E �� � �� �. ��.
The electron production rate expression involves the following key terms: ρ( h), the atmospheric density at height h;
E1( h), E2( h), E3( h), E21( h), E32( h), the energy decrease laws for the respective energy intervals; and D( E), the differential spectrum in cm−2s−1st−1MeV−1. The cutoff energy Emin = Eeff is calculated using formula( 13) and the geomagnetic cutoff ER. Atmospheric electric fields can also affect the general cutoff rigidity Emin [ 15,16,1 ].
The initial energies for the boundaries of interval 2 * before entering the atmosphere are provided by formula( 11):
( 11) E �. ��, �∗ �h� � �0.15 �. �� �
����. �
�. � h��
�
290