A Weak Rate Library for Nuclear Astrophysics
A new open source weak interaction rate library with the aim of standardizing the incorporation of weak rates in astrophysical simulations is now available. This library brings together all major weak interaction rate tables and is easily expanded to incorporate new tables of arbitrary grid resolution and ranges of density and temperature. Its first implementation was in the sensitivity study of core-collapse supernovae to nuclear electron capture (reference [1] below). For that work, this library was implemented into the neutrino-interaction library NuLib, by Evan O'Connor.
UPDATE October 2024: Version 1.3 of the weak interaction rates library is now available. For nuclei between Z=20 and Z=52, it now includes rates based on self-consistent finite-temperature covariant energy density functional theory with the quasiparticle random phase approximation (EDF), based on the work by Ravlic, Giraud, Paar, and Zegers (2024). Two rate tables are available: one in which all rates for nuclei between Z=20 and Z=52 are replaced by the EDF rates, and one in which shell-model calculations for Gamow-Teller transitions for nuclei in the pf shell are used rather than the new rates. Note that the first forbidden transitions from the EDF calculations are still included for these nuclei. The links to these two version of the library can be founbd under item [11].
UPDATE 2020: Version 1.2 of the weak interaction rates library is now available. It includes two new sets of rate tables and a more sophisticated rate approximation method, all referenced below. Also included with this version is a single recommended rate table, which incorporates rates from all available tables based on their priority within the weak rate library. The following figure provides an overview of the sets used in the creation of the library. Please refer to refs [1] and [10] if you use version 1.2 of the rate table, as well as to the individual rate sets (see references below).
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----[1]----------------------------------------------------------------------------- | Sullivan, C., O'Connor, E., Zegers, R. G. T., Grubb, T., & Austin, S. M. (2015). | | The Sensitivity of Core-Collapse Supernovae to Nuclear Electron Capture. | | The Astrophysical Journal, 816, 44. | | http://iopscience.iop.org/article/10.3847/0004-637X/816/1/44 | | The table was updated in 2022 based on the following paper: | S. Giraud, R. G. T. Zegers, B. A. Brown, J.-M. Gabler, J. Lesniak, J. Rebenstock,| | E. M. Ney, J. Engel, A. Ravlić, and N. Paar (2022) | | Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and | | effects on core-collapse supernova simulations | | Phys. Rev. C 105, 055801 (2022) | | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.105.055801 | | Contact: Remco Zegers Email: zegers@frib.msu.edu | | DOWNLOAD: Weak Rate Library | ------------------------------------------------------------------------------------Data tables for use in the above weak rates library:**
----[2]------------------------------------------------------------------------- | Fuller, G. M., Fowler, W. A., & Newman, M. J. (1982). | | Stellar weak interaction rates for intermediate-mass nuclei. | | II - A = 21 to A = 60. The Astrophysical Journal, 252, 715. | | http://doi.org/10.1086/159597 | | DOWNLOAD: FFN table | ----[3]------------------------------------------------------------------------- | Oda, T., Hino, M., Muto, K., Takahara, M., & Sato, K. (1994). | | Rate Tables for the Weak Processes of sd-Shell Nuclei in Stellar Matter. | | Atomic Data and Nuclear Data Tables, 56(2), 231-403. | | http://doi.org/10.1006/adnd.1994.1007 | | DOWNLOAD: Oda et al. table | ----[4]------------------------------------------------------------------------- | Langanke, K., & Mart\'{i}nez-Pinedo, G. (2000). | | Shell-model calculations of stellar weak interaction rates: | | II. Weak rates for nuclei in the mass range in supernovae environments. | | Nuclear Physics A, 673(1-4), 481-508. | | http://doi.org/10.1016/S0375-9474(00)00131-7 | | DOWNLOAD: LMP table | ----[5]------------------------------------------------------------------------- | Langanke, K., & Mart\'{i}nez-Pinedo, G. (2003). | | Electron capture rates on nuclei and implications for stellar core collapse. | | Physical Review Letters 90, 241102. | | http://prl.aps.org/abstract/PRL/v90/i24/e241102 | | DOWNLOAD: LMSH table | ----[6]------------------------------------------------------------------------- | Pruet, J. & Fuller, G. M. (2003) | | Estimates of Stellar Weak Interaction Rates for Nuclei in the Mass Range | | A = 65 - 80. The Astrophysical Journal, 149, 1. | | http://dx.doi.org/10.1086/376753 | | And private communication | | DOWNLOAD: Pruet 66-80 table 1 | | DOWNLOAD: Pruet 66-80 table 2 | | DOWNLOAD: Pruet 81-110 table | -------------------------------------------------------------------------------- ----[7]------------------------------------------------------------------------- | Toshio Suzuki, Hiroshi Toki and Ken'ichi Nomoto (2016). | | ELECTRON-CAPTURE AND beta-DECAY RATES FOR sd-SHELL NUCLEI IN STELLAR ENVIRONMENTS| | RELEVANT TO HIGH-DENSITY O–NE–MG CORES. The Astrophysical Journal, 817, 163 | | DOWNLOAD: Suzuki Honma table | -------------------------------------------------------------------------------- ----[8]------------------------------------------------------------------------- | When no rates are available in any of the above rate tables, an approximation | | method is used: | | Ad. R. Raduta (2017) | | Stellar electron capture rates on neutron-rich nuclei and their impact on | | stellar core collapse. Physical Review C, 95, 025805. | | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.95.025805 | -------------------------------------------------------------------------------- ----[9]------------------------------------------------------------------------ | R. Titus, C. Sullivan, R.G.T. Zegers, B.A. Brown, B. Gao | | Impact of electron-captures on nuclei near N=50 on core-collapse supernovae | | J. Phys. G: Nucl. Part. Phys 45 (December 2017), 014004 | | http://iopscience.iop.org/article/10.1088/1361-6471/aa98c1 | -------------------------------------------------------------------------------- ----[10]------------------------------------------------------------------------- | A single rate table (ascii format) incorporating all the weak rates above | | DOWNLOAD:Single weak rate table from November 2022 | | An older version which does not have the updated rates near N=50 based on | | S. Giraud et al. (Phys. Rev. C 105, 055801 (2022)) can be found at: | | Single weak rate tables | -------------------------------------------------------------------------------- ----[11]------------------------------------------------------------------------- | A single rate table (ascii format) incorporating all the weak rates above | | with rates for Z=20-52 replaced with the 2024 EDF rates by Ravlic et al. | | can be obtained from: | | DOWNLOAD:Single weak rate table from October 2024 | | Please also reference A. Ravlic, S. Giraud, N. Paar, and R.G.T. Zegers, | | to be published | | A single rate table (ascii format) incorporating all the weak rates above | | with rates for Z=20-52 replaced with the 2024 EDF rates by Ravlic et al., | | except for allowed (Gamow-Teller) transitions for which the above shell-model | | calculations are used can be obtained from: | | DOWNLOAD:Single weak rate table 2 from October 2024 | | Please also reference A. Ravlic, S. Giraud, N. Paar, and R.G.T. Zegers, | | to be published | -------------------------------------------------------------------------------- ** Make reference to the listed citations if utilizing these rates in the aformentioned library or otherwise
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