NDLI: Cross sections of α-induced reactions for targets with masses A ≈ 20

Content Provider	Springer Nature Link
Author	Mohr, Peter
Copyright Year	2015
Abstract	A simple reduction scheme using so-called reduced energies $ E_{red}$ and reduced cross sections $ \sigma_{red}$ allows the comparison of heavy-ion-induced reaction cross sections for a broad range of masses of projectile and target and over a wide energy range. A global behavior has been found for strongly bound projectiles whereas much larger reduced cross sections have been observed for weakly bound and halo projectiles. It has been shown that this simple reduction scheme works also well for $ \alpha$ -particle-induced reactions on heavy target nuclei, but very recently significant deviations have been seen for $ \alpha$ + 33S and $ \alpha$ + 23Na. Motivated by these unexpected discrepancies, the present study analyses $ \alpha$ -induced reaction cross sections for targets with masses $ A \approx$ 20-50. The study shows that the experimental data for $ \alpha$ -induced reactions on nuclei with $ A \approx$ 20-50 deviate slightly from the global behavior of reduced cross sections. However, in general the deviations evolve smoothly towards lower masses. The only significant outliers are the recent data for 33S and 23Na which are far above the general systematics, and some very old data may indicate that 36Ar and 40Ar are below the general trend. As expected, also the doubly magic 40Ca nucleus lies slightly below the results for its neighboring nuclei. Overall, the experimental data are nicely reproduced by a statistical model calculation utilizing the simple $ \alpha$ -nucleus potential by McFadden and Satchler. Simultaneously with the deviation of reduced cross sections $ \sigma_{red}$ from the general behavior, the outliers 23Na, 33S, 36Ar, and 40Ar also show significant disagreement between experiment and statistical model calculation.
Starting Page	1
Ending Page	40
Page Count	40
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	51
Issue Number	5
e-ISSN	1434601X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-05-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nuclear Physics, Heavy Ions, Hadrons Particle and Nuclear Physics Nuclear Fusion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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