دورية أكاديمية
Neutron-upscattering enhancement of the triple-alpha process
| العنوان: | Neutron-upscattering enhancement of the triple-alpha process |
|---|---|
| المؤلفون: | Bishop, J., Parker, C.E., Rogachev, G.V., Ahn, S., Koshchiy, E., Brandenburg, K., Brune, C.R., Charity, R.J., Derkin, J., Dronchi, N., Hamad, G., Jones-Alberty, Y., Kokalova, Tz., Massey, T.N., Meisel, Z., Ohstrom, E.V., Paneru, S.N., Pollacco, E.C., Saxena, M., Singh, N., Smith, Robin, Sobotka, L.G., Soltesz, D., Subedi, S.K., Voinov, A.V., Warren, J., Wheldon, C. |
| بيانات النشر: | Nature Research (part of Springer Nature) |
| سنة النشر: | 2022 |
| المجموعة: | SHURA (Sheffield Hallam University Research Archive) |
| الوصف: | The neutron inelastic scattering of carbon-12, populating the Hoyle state, is a reaction of interest for the triple-alpha process. The inverse process (neutron upscattering) can enhance the Hoyle state’s decay rate to the bound states of 12C, effectively increasing the overall triple-alpha reaction rate. The cross section of this reaction is impossible to measure experimentally but has been determined here at astrophysically-relevant energies using detailed balance. Using a highly-collimated monoenergetic beam, here we measure neutrons incident on the Texas Active Target Time Projection Chamber (TexAT TPC) filled with CO2 gas, we measure the 3α-particles (arising from the decay of the Hoyle state following inelastic scattering) and a cross section is extracted. Here we show the neutron-upscattering enhancement is observed to be much smaller than previously expected. The importance of the neutron-upscattering enhancement may therefore not be significant aside from in very particular astrophysical sites (e.g. neutron star mergers). |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | http://shura.shu.ac.uk/30132Test/; https://www.nature.com/articles/s41467-022-29848-7Test; https://shura.shu.ac.uk/30132/1/s41467-022-29848-7.pdfTest; https://shura.shu.ac.uk/30132/8/Smith-Neutron-upscatteringEnhancement%28Supp1%29.pdfTest; BISHOP, J., PARKER, C.E., ROGACHEV, G.V., AHN, S., KOSHCHIY, E., BRANDENBURG, K., BRUNE, C.R., CHARITY, R.J., DERKIN, J., DRONCHI, N., HAMAD, G., JONES-ALBERTY, Y., KOKALOVA, Tz., MASSEY, T.N., MEISEL, Z., OHSTROM, E.V., PANERU, S.N., POLLACCO, E.C., SAXENA, M., SINGH, N., SMITH, Robin , SOBOTKA, L.G., SOLTESZ, D., SUBEDI, S.K., VOINOV, A.V., WARREN, J. and WHELDON, C. (2022). Neutron-upscattering enhancement of the triple-alpha process. Nature Communications, 13: 2151. |
| DOI: | 10.1038/s41467-022-29848-7 |
| الإتاحة: | https://doi.org/10.1038/s41467-022-29848-7Test https://shura.shu.ac.uk/30132/1/s41467-022-29848-7.pdfTest https://shura.shu.ac.uk/30132/8/Smith-Neutron-upscatteringEnhancement%28Supp1%29.pdfTest |
| حقوق: | cc_by |
| رقم الانضمام: | edsbas.A9FA8048 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41467-022-29848-7 |
|---|