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 ===== On the Coding of the Aggregate Spin Number ===== ===== On the Coding of the Aggregate Spin Number =====
 +back to [[general#​format_of_quantum_numbers|Documentaion for SPFIT and SPCAT]]
  
 The **aggregate spin number** is used in the **SPFIT** and **SPCAT** programs whenver more than six quantum numbers are needed to descibe a state – even if some of the quantum numbers are redundant. It can be decoded using information provided in the **.fit** file or the **.out** file after the list of parameters in both cases. The NH<​sub>​2</​sub>​ example is used, in which //S// = 1/2, //​I//<​sub>​N</​sub>​ = 1, and //​I//<​sub>​H</​sub>​ = 1/2 for both H nuclei and **N** + **S** = **J**; **J** + **I**<​sub>​N</​sub>​ = **F**<​sub>​1</​sub>;​ **I**<​sub>​H1</​sub>​ + **I**<​sub>​H2</​sub>​ = **I**<​sub>​tot</​sub>;​ and **F**<​sub>​1</​sub>​ + **I**<​sub>​tot</​sub>​ = **F**. The **aggregate spin number** is used in the **SPFIT** and **SPCAT** programs whenver more than six quantum numbers are needed to descibe a state – even if some of the quantum numbers are redundant. It can be decoded using information provided in the **.fit** file or the **.out** file after the list of parameters in both cases. The NH<​sub>​2</​sub>​ example is used, in which //S// = 1/2, //​I//<​sub>​N</​sub>​ = 1, and //​I//<​sub>​H</​sub>​ = 1/2 for both H nuclei and **N** + **S** = **J**; **J** + **I**<​sub>​N</​sub>​ = **F**<​sub>​1</​sub>;​ **I**<​sub>​H1</​sub>​ + **I**<​sub>​H2</​sub>​ = **I**<​sub>​tot</​sub>;​ and **F**<​sub>​1</​sub>​ + **I**<​sub>​tot</​sub>​ = **F**.
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 //N// = 6, //N// = 6.5, //​F//<​sub>​1</​sub>​ = 7.5, //​I//<​sub>​tot</​sub>​ = 0.0, and //F// = 7.5. //N// = 6, //N// = 6.5, //​F//<​sub>​1</​sub>​ = 7.5, //​I//<​sub>​tot</​sub>​ = 0.0, and //F// = 7.5.
  
-back to [[general|Documentaion for SPFIT and SPCAT]]+back to [[general#​format_of_quantum_numbers|Documentaion for SPFIT and SPCAT]]
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