def __init__(self,d=[],rho=[],sigma=[],comp=[],elem_z=[],theta=[],params={}):
"""
Parameters:
-----------
All these should be num arrays, dtype = double
* d array of layer thicknesses (angstroms)
* rho array of corresponding densities (g/cm^3)
* sigma array of interface roughnesses (angstroms)
* comp is the composition array
* elem_z are the Z values of each element in the model
* theta array of theta values (degrees)
* params is a dictionary of model parameters (see set_params)
"""
self.iff = Ifeffit(screen_echo = 0)
self.nlayer = 0
self.nelem = 0
self.nthet = 0
self.fp = []
self.fpp = []
self.amu = []
self.mu_at = []
self._init_params()
# some flags
self._init_en = True
self._init_fy = True
self._init_carr = True
self._init_ptr = True
# init
self.init_model(d=d,rho=rho,sigma=sigma,comp=comp,elem_z=elem_z,theta=theta)
self.set_params(**params)
def __init__(self,
d=[],
rho=[],
sigma=[],
comp=[],
elem_z=[],
theta=[],
params={}):
"""
Parameters:
-----------
All these should be num arrays, dtype = double
* d array of layer thicknesses (angstroms)
* rho array of corresponding densities (g/cm^3)
* sigma array of interface roughnesses (angstroms)
* comp is the composition array
* elem_z are the Z values of each element in the model
* theta array of theta values (degrees)
* params is a dictionary of model parameters (see set_params)
"""
self.iff = Ifeffit(screen_echo=0)
self.nlayer = 0
self.nelem = 0
self.nthet = 0
self.fp = []
self.fpp = []
self.amu = []
self.mu_at = []
self._init_params()
# some flags
self._init_en = True
self._init_fy = True
self._init_carr = True
self._init_ptr = True
# init
self.init_model(d=d,
rho=rho,
sigma=sigma,
comp=comp,
elem_z=elem_z,
theta=theta)
self.set_params(**params)
def __init__(self, load=None):
self.root = Tk()
# launch Ifeffit in screen_echo = 0 mode
Ifeffit.__init__(self, screen_echo = 0)
self.root.option_add('*font', ('Helvetica', 12))
self.drawsplash(self.root)
Pmw.initialise(self.root)
self.root.withdraw()
self.root.title('G.I.Feffit')
self.inp_buff = [] # command buffer
self.ind_ = 0 # index in inp_buff
self.plot_opts = self.reset_plot_opts()
self.prefs = {}
self.feff_paths= {}
self.ask_exit = 1
self.iff_com = self.do_ifeffit
self.balloon = Pmw.Balloon(self.root)
self.inp_buff.append("") ;
self.createMenubar(self.root)
self.createMainWin(self.root)
self.root.mainloop()
class RefModel(_XrayRefl):
"""
Reflectivity model
See wrxrr._XrayRefl for details
regarding the initialization - we need to make
sure that the arrays/data are appropriate
to pass to the c library.
"""
def __init__(self,d=[],rho=[],sigma=[],comp=[],elem_z=[],theta=[],params={}):
"""
Parameters:
-----------
All these should be num arrays, dtype = double
* d array of layer thicknesses (angstroms)
* rho array of corresponding densities (g/cm^3)
* sigma array of interface roughnesses (angstroms)
* comp is the composition array
* elem_z are the Z values of each element in the model
* theta array of theta values (degrees)
* params is a dictionary of model parameters (see set_params)
"""
self.iff = Ifeffit(screen_echo = 0)
self.nlayer = 0
self.nelem = 0
self.nthet = 0
self.fp = []
self.fpp = []
self.amu = []
self.mu_at = []
self._init_params()
# some flags
self._init_en = True
self._init_fy = True
self._init_carr = True
self._init_ptr = True
# init
self.init_model(d=d,rho=rho,sigma=sigma,comp=comp,elem_z=elem_z,theta=theta)
self.set_params(**params)
###########################################################################
def init_model(self, d=None, rho=None, sigma=None, comp=None,
elem_z=None, theta=None):
"""
Initialize/modify model data and arrays.
Note that arrays should be passed in as numpy arrays, and will
be assigned by reference!! See wrxrr._XrayRefl._init_model for
array creation
"""
if d != None:
self.nlayer = len(d)
if (d.dtype == DTYPE): self.d = d
else: raise exceptions.ValueError
self._init_carr = True
self._init_ptr = True
#
if rho != None:
if len(rho) != self.nlayer: raise exceptions.ValueError
if (rho.dtype == DTYPE): self.rho = rho
else: raise exceptions.ValueError
self._init_ptr = True
#
if sigma != None:
if len(sigma) != self.nlayer-1: raise exceptions.ValueError
if (sigma.dtype == DTYPE): self.sigma = sigma
else: raise exceptions.ValueError
self._init_ptr = True
#
if comp != None:
if (comp.dtype != DTYPE): raise exceptions.ValueError
nel,nz = comp.shape
if nz != self.nlayer: raise exceptions.ValueError
self.comp = comp
if nel != self.nelem:
self.nelem = nel
self._init_en = True
self._init_fy = True
self._init_ptr = True
#
if elem_z != None:
if len(elem_z) != self.nelem: raise exceptions.ValueError
if (elem_z.dtype == DTYPE): self.elem_z = elem_z
else: raise exceptions.ValueError
self._init_en = True
self._init_fy = True
self._init_ptr = True
#
if theta != None:
self.nthet = len(theta)
if (theta.dtype == DTYPE): self.theta = theta
else: raise exceptions.ValueError
self._init_carr = True
self._init_ptr = True
##########################################################
def set_params(self,**params):
"""
Parameters:
-----------
* energy (eV) is the incident energy # calc_params[0]
* wconv (degrees) is the concolution width # calc_params[1]
* slen (mm) is the sample length # calc_params[2]
* bvert (mm) is the vertical beam dim # calc_params[3]
* bhorz (mm) is the horizontal beam dim # calc_params[4]
* aflag is a flag for area calcs # calc_params[6]
* fyidx is the index of the element for FY # calc_params[6]
* fyenergy (eV) is the energy of FY # calc_params[7]
* adet (deg) is the angle of the detector # calc_params[8]
* tnorm (deg) is the theta for normalizatio # calc_params[9]
* rflag is the roughness flag # calc_params[10]
* delz (ang) is the delta z for integration # calc_params[11]
* pdepth is the substrate FY clac flag # calc_params[12]
* rscale is a scale factor for reflectivity # calc_params[13]
"""
if len(params) == 0: return
if params.has_key('energy'):
self.calc_params[0] = params['energy']
self._init_en = True
if params.has_key('wconv'): self.calc_params[1] = params['wconv']
if params.has_key('slen'): self.calc_params[2] = params['slen']
if params.has_key('bvert'): self.calc_params[3] = params['bvert']
if params.has_key('bhorz'): self.calc_params[4] = params['bhorz']
if params.has_key('aflag'): self.calc_params[5] = params['aflag']
if params.has_key('fyidx'): self.calc_params[6] = params['fyidx']
if params.has_key('fyenergy'):
self.calc_params[7] = params['fyenergy']
self._init_fy = True
if params.has_key('adet'): self.calc_params[8] = params['adet']
if params.has_key('tnorm'): self.calc_params[9] = params['tnorm']
if params.has_key('rflag'): self.calc_params[10] = params['rflag']
if params.has_key('delz'): self.calc_params[11] = params['delz']
if params.has_key('pdepth'): self.calc_params[12] = params['pdepth']
if params.has_key('rscale'): self.calc_params[13] = params['rscale']
##########################################################
def get_params(self,**params):
"""
return params
"""
params = {}
params['energy'] = self.calc_params[0]
params['wconv'] = self.calc_params[1]
params['slen'] = self.calc_params[2]
params['bvert'] = self.calc_params[3]
params['bhorz'] = self.calc_params[4]
params['aflag'] = self.calc_params[5]
params['fyidx'] = self.calc_params[6]
params['fyenergy'] = self.calc_params[7]
params['adet'] = self.calc_params[8]
params['tnorm'] = self.calc_params[9]
params['rflag'] = self.calc_params[10]
params['delz'] = self.calc_params[11]
params['pdepth'] = self.calc_params[12]
params['rscale'] = self.calc_params[13]
return params
##########################################################
def init_energy(self,):
"""
Change the incident energy of the calc
get fp,fpp from ifeffit for index of refraction calcs
"""
if len(self.fp) != self.nelem:
self.fp = num.zeros(self.nelem, dtype=num.double)
self.fpp = num.zeros(self.nelem, dtype=num.double)
self.amu = num.zeros(self.nelem, dtype=num.double)
self._init_ptr = True
energy = self.calc_params[0]
for j in range(self.nelem):
en = [energy, energy + 1.]
self.iff.put_array('calc.en',en)
cmd = 'f1f2(energy=calc.en,z=%i)' % self.elem_z[j]
self.iff.ifeffit(cmd)
fp = self.iff.get_array('calc.f1')
fpp = self.iff.get_array('calc.f2')
#
self.fp[j] = fp[0]
self.fpp[j] = fpp[0]
self.amu[j] = elements.amu(self.elem_z[j])
self._init_en = False
##########################################################
def init_fy(self,):
"""
Get fpp from ifeffit and use this to est mu_atomic for fy.
This will be a decent estimate for high z and E
however, these are approx since we are ignoring
coherent and incoherent scattering cross sections
to computing total (ie this is photoeffect only)
"""
if len(self.mu_at) != self.nelem:
self.mu_at = num.zeros(self.nelem, dtype=num.double)
self._init_ptr = True
#below is 2*Na*r_e*hc (in cm^2*eV*mole/atom)
con = 4.20792637233e07
fy_energy = self.calc_params[7]
if fy_energy == 0.0:
self.mu_at = num.zeros(self.nelem, dtype=num.double)
else:
for j in range(self.nelem):
en = [fy_energy, fy_energy + 1.]
self.iff.put_array('calc.en',en)
cmd = 'f1f2(energy=calc.en,z=%i)' % self.elem_z[j]
self.iff.ifeffit(cmd)
fp = self.iff.get_array('calc.f1')
fpp = self.iff.get_array('calc.f2')
fpp = float(fpp[0])
mu = con*fpp/(fy_energy*self.amu[j])
#
self.mu_at[j] = mu
self._init_fy = False
##########################################################
def calc_R(self,ret=False):
"""
Calc reflectivity
"""
# save fy_idx to reset
tmp = self.calc_params[6]
self.calc_params[6] = -1.0
#
if self._init_en: self.init_energy()
if self._init_fy: self.init_fy()
#
self._calc(init_ptrs=self._init_ptr,init_arrs=self._init_carr)
#
if self._init_ptr == True: self._init_ptr = False
if self._init_carr == True: self._init_carr = False
#
self.calc_params[6] = tmp
#
if ret: return (self.R.copy())
##########################################################
def calc_FY(self,ret=False):
"""
Calc fluorescent yield
"""
# check some stuff
fy_idx = self.calc_params[6]
if (fy_idx < 0.) or (fy_idx > self.nelem-1):
print "Error, fy_idx out of range"
return
delz = self.calc_params[11]
if delz < 1. :
print "Error, zint too small, min = 1 ang."
return
#
if self._init_en: self.init_energy()
if self._init_fy: self.init_fy()
#
self._calc(init_ptrs=self._init_ptr, init_arrs=self._init_carr)
#
if self._init_ptr == True: self._init_ptr = False
if self._init_carr == True: self._init_carr = False
#
if ret: return (self.Y.copy(), self.R.copy())
##########################################################
def make_mole_fractions(self):
"""
make composition into mole fractions
"""
self.comp = self.comp / self.comp.sum(0)
return
class RefModel(_XrayRefl):
"""
Reflectivity model
See wrxrr._XrayRefl for details
regarding the initialization - we need to make
sure that the arrays/data are appropriate
to pass to the c library.
"""
def __init__(self,
d=[],
rho=[],
sigma=[],
comp=[],
elem_z=[],
theta=[],
params={}):
"""
Parameters:
-----------
All these should be num arrays, dtype = double
* d array of layer thicknesses (angstroms)
* rho array of corresponding densities (g/cm^3)
* sigma array of interface roughnesses (angstroms)
* comp is the composition array
* elem_z are the Z values of each element in the model
* theta array of theta values (degrees)
* params is a dictionary of model parameters (see set_params)
"""
self.iff = Ifeffit(screen_echo=0)
self.nlayer = 0
self.nelem = 0
self.nthet = 0
self.fp = []
self.fpp = []
self.amu = []
self.mu_at = []
self._init_params()
# some flags
self._init_en = True
self._init_fy = True
self._init_carr = True
self._init_ptr = True
# init
self.init_model(d=d,
rho=rho,
sigma=sigma,
comp=comp,
elem_z=elem_z,
theta=theta)
self.set_params(**params)
###########################################################################
def init_model(self,
d=None,
rho=None,
sigma=None,
comp=None,
elem_z=None,
theta=None):
"""
Initialize/modify model data and arrays.
Note that arrays should be passed in as numpy arrays, and will
be assigned by reference!! See wrxrr._XrayRefl._init_model for
array creation
"""
if d != None:
self.nlayer = len(d)
if (d.dtype == DTYPE): self.d = d
else: raise exceptions.ValueError
self._init_carr = True
self._init_ptr = True
#
if rho != None:
if len(rho) != self.nlayer: raise exceptions.ValueError
if (rho.dtype == DTYPE): self.rho = rho
else: raise exceptions.ValueError
self._init_ptr = True
#
if sigma != None:
if len(sigma) != self.nlayer - 1: raise exceptions.ValueError
if (sigma.dtype == DTYPE): self.sigma = sigma
else: raise exceptions.ValueError
self._init_ptr = True
#
if comp != None:
if (comp.dtype != DTYPE): raise exceptions.ValueError
nel, nz = comp.shape
if nz != self.nlayer: raise exceptions.ValueError
self.comp = comp
if nel != self.nelem:
self.nelem = nel
self._init_en = True
self._init_fy = True
self._init_ptr = True
#
if elem_z != None:
if len(elem_z) != self.nelem: raise exceptions.ValueError
if (elem_z.dtype == DTYPE): self.elem_z = elem_z
else: raise exceptions.ValueError
self._init_en = True
self._init_fy = True
self._init_ptr = True
#
if theta != None:
self.nthet = len(theta)
if (theta.dtype == DTYPE): self.theta = theta
else: raise exceptions.ValueError
self._init_carr = True
self._init_ptr = True
##########################################################
def set_params(self, **params):
"""
Parameters:
-----------
* energy (eV) is the incident energy # calc_params[0]
* wconv (degrees) is the concolution width # calc_params[1]
* slen (mm) is the sample length # calc_params[2]
* bvert (mm) is the vertical beam dim # calc_params[3]
* bhorz (mm) is the horizontal beam dim # calc_params[4]
* aflag is a flag for area calcs # calc_params[6]
* fyidx is the index of the element for FY # calc_params[6]
* fyenergy (eV) is the energy of FY # calc_params[7]
* adet (deg) is the angle of the detector # calc_params[8]
* tnorm (deg) is the theta for normalizatio # calc_params[9]
* rflag is the roughness flag # calc_params[10]
* delz (ang) is the delta z for integration # calc_params[11]
* pdepth is the substrate FY clac flag # calc_params[12]
* rscale is a scale factor for reflectivity # calc_params[13]
"""
if len(params) == 0: return
if params.has_key('energy'):
self.calc_params[0] = params['energy']
self._init_en = True
if params.has_key('wconv'): self.calc_params[1] = params['wconv']
if params.has_key('slen'): self.calc_params[2] = params['slen']
if params.has_key('bvert'): self.calc_params[3] = params['bvert']
if params.has_key('bhorz'): self.calc_params[4] = params['bhorz']
if params.has_key('aflag'): self.calc_params[5] = params['aflag']
if params.has_key('fyidx'): self.calc_params[6] = params['fyidx']
if params.has_key('fyenergy'):
self.calc_params[7] = params['fyenergy']
self._init_fy = True
if params.has_key('adet'): self.calc_params[8] = params['adet']
if params.has_key('tnorm'): self.calc_params[9] = params['tnorm']
if params.has_key('rflag'): self.calc_params[10] = params['rflag']
if params.has_key('delz'): self.calc_params[11] = params['delz']
if params.has_key('pdepth'): self.calc_params[12] = params['pdepth']
if params.has_key('rscale'): self.calc_params[13] = params['rscale']
##########################################################
def get_params(self, **params):
"""
return params
"""
params = {}
params['energy'] = self.calc_params[0]
params['wconv'] = self.calc_params[1]
params['slen'] = self.calc_params[2]
params['bvert'] = self.calc_params[3]
params['bhorz'] = self.calc_params[4]
params['aflag'] = self.calc_params[5]
params['fyidx'] = self.calc_params[6]
params['fyenergy'] = self.calc_params[7]
params['adet'] = self.calc_params[8]
params['tnorm'] = self.calc_params[9]
params['rflag'] = self.calc_params[10]
params['delz'] = self.calc_params[11]
params['pdepth'] = self.calc_params[12]
params['rscale'] = self.calc_params[13]
return params
##########################################################
def init_energy(self, ):
"""
Change the incident energy of the calc
get fp,fpp from ifeffit for index of refraction calcs
"""
if len(self.fp) != self.nelem:
self.fp = num.zeros(self.nelem, dtype=num.double)
self.fpp = num.zeros(self.nelem, dtype=num.double)
self.amu = num.zeros(self.nelem, dtype=num.double)
self._init_ptr = True
energy = self.calc_params[0]
for j in range(self.nelem):
en = [energy, energy + 1.]
self.iff.put_array('calc.en', en)
cmd = 'f1f2(energy=calc.en,z=%i)' % self.elem_z[j]
self.iff.ifeffit(cmd)
fp = self.iff.get_array('calc.f1')
fpp = self.iff.get_array('calc.f2')
#
self.fp[j] = fp[0]
self.fpp[j] = fpp[0]
self.amu[j] = elements.amu(self.elem_z[j])
self._init_en = False
##########################################################
def init_fy(self, ):
"""
Get fpp from ifeffit and use this to est mu_atomic for fy.
This will be a decent estimate for high z and E
however, these are approx since we are ignoring
coherent and incoherent scattering cross sections
to computing total (ie this is photoeffect only)
"""
if len(self.mu_at) != self.nelem:
self.mu_at = num.zeros(self.nelem, dtype=num.double)
self._init_ptr = True
#below is 2*Na*r_e*hc (in cm^2*eV*mole/atom)
con = 4.20792637233e07
fy_energy = self.calc_params[7]
if fy_energy == 0.0:
self.mu_at = num.zeros(self.nelem, dtype=num.double)
else:
for j in range(self.nelem):
en = [fy_energy, fy_energy + 1.]
self.iff.put_array('calc.en', en)
cmd = 'f1f2(energy=calc.en,z=%i)' % self.elem_z[j]
self.iff.ifeffit(cmd)
fp = self.iff.get_array('calc.f1')
fpp = self.iff.get_array('calc.f2')
fpp = float(fpp[0])
mu = con * fpp / (fy_energy * self.amu[j])
#
self.mu_at[j] = mu
self._init_fy = False
##########################################################
def calc_R(self, ret=False):
"""
Calc reflectivity
"""
# save fy_idx to reset
tmp = self.calc_params[6]
self.calc_params[6] = -1.0
#
if self._init_en: self.init_energy()
if self._init_fy: self.init_fy()
#
self._calc(init_ptrs=self._init_ptr, init_arrs=self._init_carr)
#
if self._init_ptr == True: self._init_ptr = False
if self._init_carr == True: self._init_carr = False
#
self.calc_params[6] = tmp
#
if ret: return (self.R.copy())
##########################################################
def calc_FY(self, ret=False):
"""
Calc fluorescent yield
"""
# check some stuff
fy_idx = self.calc_params[6]
if (fy_idx < 0.) or (fy_idx > self.nelem - 1):
print "Error, fy_idx out of range"
return
delz = self.calc_params[11]
if delz < 1.:
print "Error, zint too small, min = 1 ang."
return
#
if self._init_en: self.init_energy()
if self._init_fy: self.init_fy()
#
self._calc(init_ptrs=self._init_ptr, init_arrs=self._init_carr)
#
if self._init_ptr == True: self._init_ptr = False
if self._init_carr == True: self._init_carr = False
#
if ret: return (self.Y.copy(), self.R.copy())
##########################################################
def make_mole_fractions(self):
"""
make composition into mole fractions
"""
self.comp = self.comp / self.comp.sum(0)
return
from Ifeffit import Ifeffit
from numpy import array,sqrt, exp, power
from scipy.special import gamma, gammaln
import time
iff = Ifeffit()
iff.ifeffit("set my.r = range(2,4,0.01)")
iff.ifeffit("show @arrays")
r = iff.get_array('my.r')
iff.ifeffit("set my.rho = my.r * my.r")
# iff.ifeffit("plot(my.r, my.rho)")
print r
def rho(r,r0, sigma2,k3):
sigma = sqrt(sigma2)
beta = k3 / sigma2*sigma
q = 4 / (beta*beta)
MAX = 20.
if q > MAX: q=MAX
if q < 2: q=2
if gammaln(q) > MAX:
gammaq = MAX
else:
gammaq = max(1,min(MAX,gamma(q)))
#print r0, sigma, beta, 4/(beta*beta), q, q-1, gammaln(q), gamma(q), gammaq
pre = 2/ (sigma*abs(beta)*gammaq)
