# physicscore

Fortran module: `physicscore`

## Parameters

User-configurable parameters (can be set via `param_dict`):

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `cloudsize` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `h2crprate` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `outer_coldens_for_current_step` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `targettime` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `timeinyears` | `<class 'numpy.ndarray'>` | `0.0` |  |
| `zetascale` | `<class 'numpy.ndarray'>` | `0.0` |  |

## Constants (Read-Only)

Fortran PARAMETER constants (compile-time values):

| Constant | Type | Value |
|----------|------|-------|
| `ckhdiss` | `float64[(10,)]` | `array(10,)` |
| `ckhion` | `float64[(10,)]` | `array(10,)` |
| `ckldiss` | `float64[(10,)]` | `array(10,)` |
| `cklion` | `float64[(10,)]` | `array(10,)` |
| `dp` | `<class 'numpy.ndarray'>` | `8` |
| `tdsub` | `<class 'numpy.ndarray'>` | `1500.0` |
| `wave1` | `<class 'numpy.ndarray'>` | `0.0911648453171991` |
| `wave2` | `<class 'numpy.ndarray'>` | `20.0` |

## Internal Variables

```{dropdown} Internal solver variables (advanced)
| Variable | Type | Current Value |
|----------|------|---------------|
| `currenttimeold` | `<class 'numpy.ndarray'>` | `0.0` |
| `dstep` | `<class 'numpy.ndarray'>` | `0` |
```

## Runtime Access

Access `physicscore` parameters at runtime using `uclchem.advanced.GeneralSettings()`.
See [Accessing Fortran Parameters](index.html#accessing-fortran-parameters-at-runtime) on the main Fortran API page for examples.