# only consider TALYS cross sections for A >= 12
idx = (data['Z'] + data['N']) >= 12
data = data[idx]
# factor out the principal scaling given by the TRK formula: sigma_int ~ Z*N/A
data['xs'] /= (data['Z'] * data['N'] / (data['Z'] + data['N']))[:, np.newaxis]
# pad cross sections to next larger 2^n + 1 tabulation points for Romberg integration
eps = iR.romb_pad_logspaced(eps, 513)
xs = np.array([iR.romb_pad_zero(x, 513) for x in data['xs']]) * 1e-31
for field in fields:
print(field.name)
# calculate the interaction rate, averaged over all isotopes
rate = np.mean([iR.calc_rate_eps(eps, x, gamma, field) for x in xs],
axis=0)
fname = folder + '/rate_%s.txt' % field.name.split('_')[0]
try:
git_hash = gh.get_git_revision_hash()
header = (
"Average interaction rate for elastic scattering of %s photons off nuclei\n"
% field.info + "Produced with crpropa-data version: " + git_hash +
"\n" +
"Scale with Z*N/A for nuclei\n1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps"
)
except:
header = (
"Average interaction rate for elastic scattering of %s photons off nuclei\n"
"Scale with Z*N/A for nuclei\n1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps"
% field.info)
fields = [
photonField.CMB(),
photonField.EBL_Kneiske04(),
photonField.EBL_Stecker05(),
photonField.EBL_Franceschini08(),
photonField.EBL_Finke10(),
photonField.EBL_Dominguez11(),
photonField.EBL_Gilmore12()
]
# calculate interaction rates at z=0, default option
for field in fields:
print field
r1 = interactionRate.calc_rate_eps(eps1, xs1, gamma, field)
r2 = interactionRate.calc_rate_eps(eps2, xs2, gamma, field)
fname = 'data/ppp_%s.txt' % field.name
data = c_[lgamma, r1, r2]
fmt = '%.2f\t%.6e\t%.6e'
header = ("Photo-pion interaction rate with the %s\nlog10(gamma)"
"\t1/lambda_proton [1/Mpc]\t1/lambda_neutron [1/Mpc]"%field.info)
savetxt(fname, data, fmt=fmt, header=header)
# calculate redshift dependent interaction rates
for field in fields:
print field
redshifts = field.redshift
if redshifts is None:
fields = [
photonField.CMB(),
photonField.EBL_Kneiske04(),
photonField.EBL_Stecker05(),
photonField.EBL_Franceschini08(),
photonField.EBL_Finke10(),
photonField.EBL_Dominguez11(),
photonField.EBL_Gilmore12()]
for field in fields:
print (field.name)
# Calculate total interaction rates
R1 = array([interactionRate.calc_rate_eps(eps1, x, gamma, field) for x in xs1sum])
R2 = array([interactionRate.calc_rate_eps(eps2, x, gamma, field) for x in xs2sum])
savetxt('data/pd_%s.txt' % field.name,
r_[c_[d1sum['Z'], d1sum['N'], R1], c_[d2sum['Z'], d2sum['N'], R2]],
fmt='%i\t%i' + '\t%g'*201,
header='Photodisintegration by the %s\nZ, N, 1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps' % field.info)
# Calculate branching ratios from exclusive interaction rates
B1 = array([interactionRate.calc_rate_eps(eps1, x, gamma, field) for x in xs1exc])
B2 = array([interactionRate.calc_rate_eps(eps2, x, gamma, field) for x in xs2exc])
for (Z, N, A) in isotopes1:
s = (d1exc['Z'] == Z) * (d1exc['N'] == N)
B1[s] /= sum(B1[s], axis=0)
for (Z, N, A) in isotopes2:
s = (d2exc['Z'] == Z) * (d2exc['N'] == N)
idx = (data['Z'] + data['N']) >= 12
data = data[idx]
# Factor out the principal scaling given by the TRK formula: sigma_int ~ Z*N/A
data['xs'] /= ( data['Z'] * data['N'] / (data['Z'] + data['N']) )[:,newaxis]
# Pad cross sections to next larger 2^n + 1 tabulation points for Romberg integration
eps = iR.romb_pad_logspaced(eps, 513)
xs = array([iR.romb_pad_zero(x, 513) for x in data['xs']]) * 1e-31
for field in [photonField.CMB(), photonField.EBL_Gilmore12()]:
print (field.name)
# Calculate the interaction rate, averaged over all isotopes
rate = mean([iR.calc_rate_eps(eps, x, gamma, field) for x in xs], axis=0)
savetxt('data/ElasticScattering_%s.txt' % field.name.split('_')[0],
rate, fmt='%g',
header='Average interaction rate for elastic scattering of %s photons off nuclei\nScale with Z*N/A for nuclei\n1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps' % field.info)
# Calculate CDF for background photon energies, averaged over all isotopes
CDF = zeros((len(gamma), len(eps)))
for x in xs:
C = iR.calc_diffrate_eps(eps, x, gamma, field)
CDF += C / amax(C, axis=1)[:,newaxis]
CDF /= len(data)
CDF = nan_to_num(CDF)
savetxt('data/ElasticScattering_CDF_%s.txt' % field.name.split('_')[0],
c_[log10(gamma), CDF],
photonField.EBL_Gilmore12(),
photonField.EBL_Stecker16('upper'),
photonField.EBL_Stecker16('lower')
]
for field in fields:
print(field.name)
# output folder
folder = 'data/Photodisintegration'
if not os.path.exists(folder):
os.makedirs(folder)
# Calculate total interaction rates
R1 = np.array(
[interactionRate.calc_rate_eps(eps1, x, gamma, field) for x in xs1sum])
R2 = np.array(
[interactionRate.calc_rate_eps(eps2, x, gamma, field) for x in xs2sum])
np.savetxt(
folder + '/rate_%s.txt' % field.name,
np.r_[np.c_[d1sum['Z'], d1sum['N'], R1], np.c_[d2sum['Z'], d2sum['N'],
R2]],
fmt='%i\t%i' + '\t%g' * 201,
header=
'Photodisintegration by the %s\nZ, N, 1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps'
% field.info)
# Calculate branching ratios from exclusive interaction rates
B1 = np.array(
[interactionRate.calc_rate_eps(eps1, x, gamma, field) for x in xs1exc])
idx = (data['Z'] + data['N']) >= 12
data = data[idx]
# factor out the principal scaling given by the TRK formula: sigma_int ~ Z*N/A
data['xs'] /= (data['Z'] * data['N'] / (data['Z'] + data['N']))[:, np.newaxis]
# pad cross sections to next larger 2^n + 1 tabulation points for Romberg integration
eps = iR.romb_pad_logspaced(eps, 513)
xs = np.array([iR.romb_pad_zero(x, 513) for x in data['xs']]) * 1e-31
for field in fields:
print(field.name)
# calculate the interaction rate, averaged over all isotopes
rate = np.mean([iR.calc_rate_eps(eps, x, gamma, field) for x in xs], axis=0)
fname = folder + '/rate_%s.txt' % field.name.split('_')[0]
header = 'Average interaction rate for elastic scattering of %s photons off nuclei\nScale with Z*N/A for nuclei\n1/lambda [1/Mpc] for log10(gamma) = 6-14 in 201 steps' % field.info
np.savetxt(fname, rate, fmt='%g', header=header)
# calculate CDF for background photon energies, averaged over all isotopes
CDF = np.zeros((len(gamma), len(eps)))
for x in xs:
C = iR.calc_rate_eps(eps, x, gamma, field, cdf=True)
CDF += C / np.max(C, axis=1, keepdims=True)
CDF /= len(data)
CDF = np.nan_to_num(CDF)
fname = folder + '/cdf_%s.txt' % field.name.split('_')[0]
data = np.c_[np.log10(gamma), CDF]
fmt = '%g' + '\t%g' * len(eps)
d = np.genfromtxt('tables/PPP/xs_neutron.txt', unpack=True)
eps2 = d[0, :2049] * 1e9 * eV # [J]
xs2 = d[1, :2049] * 1e-34 # [m^2]
for field in fields:
print(field.name)
# output folder
folder = 'data/PhotoPionProduction'
if not os.path.exists(folder):
os.makedirs(folder)
# ----------------------------------------------------
# calculate interaction rates at z=0, default option
# ----------------------------------------------------
r1 = interactionRate.calc_rate_eps(eps1, xs1, gamma, field)
r2 = interactionRate.calc_rate_eps(eps2, xs2, gamma, field)
fname = folder + '/rate_%s.txt' % field.name
data = np.c_[lgamma, r1, r2]
fmt = '%.2f\t%.6e\t%.6e'
try:
git_hash = gh.get_git_revision_hash()
header = (
"Photo-pion interaction rate with the %s\n" % field.info +
"Produced with crpropa-data version: " + git_hash + "\n" +
"log10(gamma)\t1/lambda_proton [1/Mpc]\t1/lambda_neutron [1/Mpc]")
except:
header = ("Photo-pion interaction rate with the %s\nlog10(gamma)"
"\t1/lambda_proton [1/Mpc]\t1/lambda_neutron [1/Mpc]" %
field.info)
