Statistical density of nuclear excited states
A semi-classical approximation is applied to the calculations of single-particle and statistical level densities in excited nuclei. Landau's conception of quasi-particles with the nucleon effective mass m* < m is used. The approach provides the correct description of the continuum contributi...
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| Format: | Article |
| Language: | English |
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Institute for Nuclear Research, National Academy of Sciences of Ukraine
2015-10-01
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| Series: | Âderna Fìzika ta Energetika |
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| Online Access: | http://jnpae.kinr.kiev.ua/16.2/html/16.2.0115.html |
| _version_ | 1828387685871386624 |
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| author | V. M. Kolomietz |
| author_facet | V. M. Kolomietz |
| author_sort | V. M. Kolomietz |
| collection | DOAJ |
| description | A semi-classical approximation is applied to the calculations of single-particle and statistical level densities in excited nuclei. Landau's conception of quasi-particles with the nucleon effective mass m* < m is used. The approach provides the correct description of the continuum contribution to the level density for realistic finite-depth potentials. It is shown that the continuum states does not affect significantly the thermodynamic calculations for sufficiently small temperatures T ≤ 1 MeV but reduce strongly the results for the excitation energy at high temperatures. By use of standard Woods - Saxon potential and nucleon effective mass m* = 0.7m the A-dependency of the statistical level density parameter K was evaluated in a good qualitative agreement with experimental data. |
| first_indexed | 2024-12-10T05:57:43Z |
| format | Article |
| id | doaj.art-467aaae025f6431fa46fcbc6461db112 |
| institution | Directory Open Access Journal |
| issn | 1818-331X 2074-0565 |
| language | English |
| last_indexed | 2024-12-10T05:57:43Z |
| publishDate | 2015-10-01 |
| publisher | Institute for Nuclear Research, National Academy of Sciences of Ukraine |
| record_format | Article |
| series | Âderna Fìzika ta Energetika |
| spelling | doaj.art-467aaae025f6431fa46fcbc6461db1122022-12-22T01:59:52ZengInstitute for Nuclear Research, National Academy of Sciences of UkraineÂderna Fìzika ta Energetika1818-331X2074-05652015-10-01162115123Statistical density of nuclear excited statesV. M. Kolomietz0Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine A semi-classical approximation is applied to the calculations of single-particle and statistical level densities in excited nuclei. Landau's conception of quasi-particles with the nucleon effective mass m* < m is used. The approach provides the correct description of the continuum contribution to the level density for realistic finite-depth potentials. It is shown that the continuum states does not affect significantly the thermodynamic calculations for sufficiently small temperatures T ≤ 1 MeV but reduce strongly the results for the excitation energy at high temperatures. By use of standard Woods - Saxon potential and nucleon effective mass m* = 0.7m the A-dependency of the statistical level density parameter K was evaluated in a good qualitative agreement with experimental data.http://jnpae.kinr.kiev.ua/16.2/html/16.2.0115.htmllevel densityexcited nucleinuclear temperaturenucleon effective masscontinuum levels. |
| spellingShingle | V. M. Kolomietz Statistical density of nuclear excited states Âderna Fìzika ta Energetika level density excited nuclei nuclear temperature nucleon effective mass continuum levels. |
| title | Statistical density of nuclear excited states |
| title_full | Statistical density of nuclear excited states |
| title_fullStr | Statistical density of nuclear excited states |
| title_full_unstemmed | Statistical density of nuclear excited states |
| title_short | Statistical density of nuclear excited states |
| title_sort | statistical density of nuclear excited states |
| topic | level density excited nuclei nuclear temperature nucleon effective mass continuum levels. |
| url | http://jnpae.kinr.kiev.ua/16.2/html/16.2.0115.html |
| work_keys_str_mv | AT vmkolomietz statisticaldensityofnuclearexcitedstates |