---
search:
boost: 5.0
---
# Slot: pressure_time_constant
_Time constant/step (relaxation time of pressure) used for coupling the system pressure, given as a float._
URI: [https://CCPBioSim.ac.uk/biosim-schema/pressure_time_constant](https://CCPBioSim.ac.uk/biosim-schema/pressure_time_constant)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [Barostat](../classes/Barostat.md) | Settings used for the simulation barostat | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [TimeQuantity](../classes/TimeQuantity.md) |
| Domain Of | [Barostat](../classes/Barostat.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
## Examples
| Value |
| --- |
| 1.0 ps |
| 5.0 ps |
## Identifier and Mapping Information
### Annotations
| property | value |
| --- | --- |
| engine_mapping | [{'engine': 'gromacs', 'key': 'tau-p', 'unit': 'ps'}, {'engine': 'amber', 'key': 'taup', 'unit': 'ps'}] |
### Schema Source
* from schema: https://CCPBioSim.ac.uk/biosim-schema/
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | https://CCPBioSim.ac.uk/biosim-schema/pressure_time_constant |
| native | https://CCPBioSim.ac.uk/biosim-schema/pressure_time_constant |
## LinkML Source
```yaml
name: pressure_time_constant
annotations:
engine_mapping:
tag: engine_mapping
value:
- engine: gromacs
key: tau-p
unit: ps
- engine: amber
key: taup
unit: ps
description: Time constant/step (relaxation time of pressure) used for coupling the
system pressure, given as a float.
examples:
- value: 1.0 ps
- value: 5.0 ps
from_schema: https://CCPBioSim.ac.uk/biosim-schema/
rank: 1000
domain_of:
- Barostat
range: TimeQuantity
```