zcross 0.0.4

An utility to read low-pressure gaseous cross sections data

ZCross

ZCross is a python library used to read low pressure gas sections from various sources like LXCat.

Installation

To install this package just use pip:

pip install zcross

Cross section databases are not provided by ZCross: however, it is possible to download the cross section tables of interest from LXCat. Once you download the cross sections in XML format, you can convert it into a format readable by ZCross using this online converter. It is now possible to save the cross section tables in any location (we suggest under /opt/zcross_data) and to define an enviroment variable pointing to that path:

export ZCROSS_DATA=/opt/zcross_data

(you can add it to your .profile file)

Examples

List the database availables:

from zcross import ZCross

z = ZCross()
for database in z.databases:
	print(database)

Show the groups and references of a speficic database:

from zcross import ZCross

z = ZCross()
database = z.databases[0]

for group in database.groups:
	print(group)

for reference in database.references:
	print(reference.bibtex())

Show the process of a specific group:

from zcross import ZCross

z = ZCross()
database = z.databases[0]
group      = database.groups[0]

for process in group.processes:
	print("Process {} (type: {}) : {}".format(process.id, process.collisionType, process))
	print("Comment: {}\n".format(process.comment))

Show the cross section table of a specific process:

from zcross import ZCross

z = ZCross()
database = z.databases[0]
group    = database.groups[0]
process  = group.processes[0]

print('Energy [{}],\tArea [{}]'.format(process.energy_units, process.cross_section_units))

for energy, area in zip(process.energy, process.cross_section):
	print('{:8.2f}\t{:e}'.format(energy, area))