Estimation of the sources of pelagic sediments from the South Pacific Ocean to the Antarctic Ocean |
| |
Authors: | K Shozugawa A Kuno Y Sano M Matsuo |
| |
Institution: | (1) National Institute for Physics and Nuclear Engineering “Horia Hulubei”, 407 Atomistilor Street, C.P. MG-6, 077125 Magurele, Ilfov, Romania |
| |
Abstract: | Gamma-irradiated L-α-alanine used in EPR-coupled dosimetry has a complex EPR spectrum at room temperature. Changing the temperature
or other conditions of the irradiated samples leads to varied EPR spectrum, i.e., some components disappear and/or new ones
are formed. We used both molecular mechanics (MM+) and semiempirical (AM1) methods to perform a theoretical investigation
of the seven radical species that have been experimentally detected. We established their order of priority in the given simulation
conditions (at 0 K, in vacuo). The formation stages advanced for these long-lived radical species were characterized by a
theoretical determination of the reaction enthalpies. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|