SpinFunctions¶
- class ompy.SpinFunctions(Ex, J, model, pars)[source]¶
Bases:
objectCalculates spin distributions, spin cuts (…)
- Parameters:
Methods Summary
Get spin distribution
gDisc_and_EB05(mass, NLDa, Eshift, Sn, ...)Linear interpolation of the spin-cut between a spin cut "from the discrete levels" and EB05 .
gDisc_and_sigmaSn(sigma2_disc, sigma2_Sn[, Ex])Linear interpolation of the spin-cut between a spin cut "from the discrete levels" and a set value at the nutron separation energy. Essentially the same as gDisc_and_EB05 but with spin-cut at Sn explicitly set. Reference: Guttormsen et al., PRC 96, 024313 (2017) R. Capote et al., Nucl. Data Sheets 110, 3107-3214 (2009).
gEB05(mass, NLDa, Eshift[, Ex])Von Egidy & B PRC72,044311(2005), Eq.
gEB09_CT(mass[, Ex])The constant temperature (CT) formula - Von Egidy & B PRC80,054310, see sec.
gEB09_emp(mass, Pa_prime[, Ex])Von Egidy & B PRC80,054310, Eq.(16) FG+CT
gconst(sigma[, Ex])Constant spin-cutoff parameter
Get the square of the spin cut for a specified model
Methods Documentation
- distribution()[source]¶
Get spin distribution
Note: Assuming equal parity
- Returns:
- Spin distribution. Shape
depends on input Ex and J and is squeezed if only one of them is an array. If both are arrays: spinDist[Ex,J]
- Return type:
spinDist (Tuple[float, np.ndarray])
- gDisc_and_EB05(mass, NLDa, Eshift, Sn, sigma2_disc, Ex=None)[source]¶
Linear interpolation of the spin-cut between a spin cut “from the discrete levels” and EB05 .. rubric:: References
Guttormsen et al., PRC 96, 024313 (2017) R. Capote et al., Nucl. Data Sheets 110, 3107-3214 (2009)
Note
We set sigma2(E<E_discrete) = sigma2(E_discrete). This is not specified in the article, and may have been done differently before.
- Parameters:
mass (int) – The mass number of the residual nucleus
NLDa (float) – Level density parameter
Eshift (float) – Energy shift
Sn (float) – Neutron separation energy
sigma2_disc (Tuple[float, float]) – [float, float] [Energy, sigma2] from the discretes
Ex (float or Sequence, optional) – Excitation energy. Defaults to self.Ex
- Returns:
Squared spincut
- Return type:
Union[float, Sequence]
- gDisc_and_sigmaSn(sigma2_disc, sigma2_Sn, Ex=None)[source]¶
Linear interpolation of the spin-cut between a spin cut “from the discrete levels” and a set value at the nutron separation energy. Essentially the same as gDisc_and_EB05 but with spin-cut at Sn explicitly set. Reference:
Guttormsen et al., PRC 96, 024313 (2017) R. Capote et al., Nucl. Data Sheets 110, 3107-3214 (2009)
- gEB05(mass, NLDa, Eshift, Ex=None)[source]¶
Von Egidy & B PRC72,044311(2005), Eq. (4) The rigid moment of inertia formula (RMI) FG+CT
- gEB09_CT(mass, Ex=None)[source]¶
The constant temperature (CT) formula - Von Egidy & B PRC80,054310, see sec. IV, p7 refering to ref. below - original ref: Von Egidy et al., NPA 481 (1988) 189, Eq. (3)