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Code Issues Projects Releases Packages Wiki Activity Actions 5

Address @paulromano comments in #1023

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amandalund 2018-07-05 23:25:42 -05:00
parent 7dcd6239eb
commit 4ebeb737ab
11 changed files with 95 additions and 70 deletions
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5
openmc/data/endf.py
View file

@ -24,8 +24,9 @@ from openmc.stats.univariate import Uniform, Tabular, Legendre
_LIBRARY = {0: 'ENDF/B', 1: 'ENDF/A', 2: 'JEFF', 3: 'EFF',
4: 'ENDF/B High Energy', 5: 'CENDL', 6: 'JENDL',
31: 'INDL/V', 32: 'INDL/A', 33: 'FENDL', 34: 'IRDF',
35: 'BROND', 36: 'INGDB-90', 37: 'FENDL/A', 41: 'BROND'}
17: 'TENDL', 18: 'ROSFOND', 21: 'SG-21', 31: 'INDL/V',
32: 'INDL/A', 33: 'FENDL', 34: 'IRDF', 35: 'BROND',
36: 'INGDB-90', 37: 'FENDL/A', 41: 'BROND'}
_SUBLIBRARY = {
0: 'Photo-nuclear data',

35
openmc/data/photon.py
View file

@ -105,6 +105,7 @@ _STOPPING_POWERS = {}
# for each element are in a 2D array with shape (n, k) stored on the key 'Z'.
_BREMSSTRAHLUNG = {}
class AtomicRelaxation(EqualityMixin):
"""Atomic relaxation data.
@ -328,7 +329,7 @@ class AtomicRelaxation(EqualityMixin):
class IncidentPhoton(EqualityMixin):
"""Photon interaction data.
r"""Photon interaction data.
This class stores photo-atomic, photo-nuclear, atomic relaxation,
Compton profile, stopping power, and bremsstrahlung data assembled from
@ -350,9 +351,9 @@ class IncidentPhoton(EqualityMixin):
Atomic relaxation data
bremsstrahlung : dict
Dictionary of bremsstrahlung DCS data with keys 'electron_energy'
(incident electron kinetic energy values in eV), 'photon_energy'
(incident electron kinetic energy values in [eV]), 'photon_energy'
(ratio of the energy of the emitted photon to the incident electron
kinetic energy), and 'dcs' (cross sectin values in mb). The cross
kinetic energy), and 'dcs' (cross sectin values in [b]). The cross
sections are in scaled form: :math:`(\beta^2/Z^2) E_k (d\sigma/dE_k)`,
where :math:`E_k` is the energy of the emitted photon.
compton_profiles : dict
@ -366,10 +367,10 @@ class IncidentPhoton(EqualityMixin):
Contains the cross sections for each photon reaction. The keys are MT
values and the values are instances of :class:`PhotonReaction`.
stopping_powers : dict
Dictionary of stopping power data with keys 'energy' (in eV), 'I' (mean
Dictionary of stopping power data with keys 'energy' (in [eV]), 'I' (mean
excitation energy), 's_collision' (collision stopping power in
eV cm:sup:`2`/g), and 's_radiative' (radiative stopping power in
eV cm:sup:`2`/g)
[eV cm\ :sup:`2`/g]), and 's_radiative' (radiative stopping power in
[eV cm\ :sup:`2`/g])
summed_reactions : collections.OrderedDict
Contains summed cross sections. The keys are MT values and the values
are instances of :class:`PhotonReaction`.
@ -587,13 +588,13 @@ class IncidentPhoton(EqualityMixin):
_STOPPING_POWERS['energy'] = f['energy'].value*EV_PER_MEV
for i in range(1, 99):
group = f['{:03}'.format(i)]
_STOPPING_POWERS[i] = {'I': group.attrs['I'],
's_collision': group['s_collision'].value,
's_radiative': group['s_radiative'].value}
# Units are in MeV cm^2/g; convert to eV cm^2/g
_STOPPING_POWERS[i]['s_collision'] *= EV_PER_MEV
_STOPPING_POWERS[i]['s_radiative'] *= EV_PER_MEV
_STOPPING_POWERS[i] = {
'I': group.attrs['I'],
's_collision': group['s_collision'].value*EV_PER_MEV,
's_radiative': group['s_radiative'].value*EV_PER_MEV
}
# Add stopping power data
if Z < 99:
@ -616,8 +617,9 @@ class IncidentPhoton(EqualityMixin):
# Index in data
p = 39
# Get log of incident electron kinetic energy values, used for cubic
# spline interpolation in log energy. Units are in MeV, so convert to eV.
# Get log of incident electron kinetic energy values, used for
# cubic spline interpolation in log energy. Units are in MeV, so
# convert to eV.
logx = np.log(np.fromiter(brem[p:p+n], float, n)*EV_PER_MEV)
p += n
@ -628,9 +630,10 @@ class IncidentPhoton(EqualityMixin):
for i in range(1, 101):
dcs = np.empty([len(log_energy), k])
# Get the scaled cross section values for each electron energy and
# reduced photon energy for this Z
y = np.reshape(np.fromiter(brem[p:p+n*k], float, n*k), (n, k))
# Get the scaled cross section values for each electron energy
# and reduced photon energy for this Z. Units are in mb, so
# convert to b.
y = np.reshape(np.fromiter(brem[p:p+n*k], float, n*k), (n, k))*1.0e-3
p += k*n
for j in range(k):