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We report, {for the first time, the emergence of} a secondary bow with ripples in $^{12}$C+$^{12}$C nuclear rainbow scattering. This finding was achieved by studying the experimental angular distributions in $^{12}$C+$^{12}$C scattering at…

核理论 · 物理学 2025-09-19 S. Ohkubo , Y. Hirabayashi

Rainbows are generally considered to be caused by static refraction and reflection. A primary and a secondary rainbow appear due to refraction and internal reflection in a raindrop as explained by Newton. The quantum nuclear rainbow, which…

核理论 · 物理学 2014-05-15 S. Ohkubo , Y. Hirabayashi

Elastic scattering of alpha-particle and some tightly-bound light nuclei has shown the pattern of rainbow scattering at medium energies, which is due to the refraction of the incident wave by a strongly attractive nucleus-nucleus potential.…

核理论 · 物理学 2008-11-26 Dao T. Khoa , W. von Oertzen , H. G. Bohlen , S. Ohkubo

The nuclear rainbow observed in the elastic $\alpha$-nucleus and light heavy-ion scattering is proven to be due to the refraction of the scattering wave by a deep, attractive real optical potential. The nuclear rainbow pattern, established…

核理论 · 物理学 2021-02-16 Nguyen Hoang Phuc , Dao T. Khoa , Nguyen Tri Toan Phuc , Do Cong Cuong

Extensive elastic scattering data measured at energies around 10 to 20 MeV/nucleon for some identical systems, like 12C+12C and 16O+16O, exhibit the nuclear rainbow pattern of broad Airy oscillations of the cross section at medium and large…

核理论 · 物理学 2024-06-13 Nguyen Tri Toan Phuc , Nguyen Hoang Phuc , Dao T. Khoa

The existence of a secondary bow is confirmed for 13C+12C nuclear rainbow scattering in addition to the 16O+12C system. This is found by studying the experimental angular distribution of 13C+12C scattering at the incident 13C energy…

核理论 · 物理学 2015-11-26 S. Ohkubo , Y. Hirabayashi , A. A. Ogloblin

The existence of a supernumerary nuclear rainbow in inelastic scattering is reported. This is done by studying inelastic $^{16}$O scattering from $^{12}$C, exciting the $2^+$ (4.44 MeV) state of $^{12}$C and elastic scattering at the…

核理论 · 物理学 2017-08-16 S. Ohkubo , Y. Hirabayashi , A. A. Ogloblin

We perform a systematic study of inelastic nuclear rainbow scattering for the \oc system to the 2$^+$ (4.44 MeV) state of $^{12}$C at incident energies of 100--608 MeV with the coupled-channels method. The recently generalized…

核理论 · 物理学 2024-10-18 Nguyen Hoang Phuc , Nguyen Tri Toan Phuc , Do Cong Cuong

The Airy structure in $^{16}$O+$^{14}$C rainbow scattering is studied with an extended double folding (EDF) model that describes all the diagonal and off-diagonal coupling potentials derived from the microscopic realistic wave functions for…

核理论 · 物理学 2015-09-03 S. Ohkubo , Y. Hirabayashi

The Airy structure of the nuclear rainbow and prerainbow in inelastic and elastic $\alpha+^{16}$O scattering is studied with the coupled channel method using a folding potential derived from the microscopic wave functions of $^{16}$O. The…

核理论 · 物理学 2013-07-19 Y. Hirabayashi , S. Ohkubo

Inelastic $^{16}$O +$^{12}$C rainbow scattering to the $2^+$ (4.44 MeV) state of $^{12}$C was measured at the incident energies, $E_L$ = 170, 181, 200, 260 and 281 MeV. A systematic analysis of the experimental angular distributions was…

The nearside-farside (NF) decomposition method developed originally by Fuller for elastic scattering of a nonidentical nucleus-nucleus system was generalized to study the nuclear rainbow pattern in a symmetric or core-symmetric dinuclear…

核理论 · 物理学 2026-05-22 Nguyen Tri Toan Phuc , Nguyen Hoang Phuc , Dao T. Khoa

The number of gross structures in the 90$^\circ$ excitation function for $^{12}$C+$^{12}$C elastic scattering, often called Airy elephants, has been of great interest. These structures are caused by refractive scattering and are separated…

核理论 · 物理学 2025-07-29 S. Ohkubo , Y. Hirabayashi

The experimental data on the $^{16}$O$+^{12}$C and $^{18}$O$+^{12}$C elastic scatterings and their optical model analysis are presented. Detailed and complete elastic angular distributions have been measured at the Strasbourg Vivitron…

We discuss some differences and similarities between electron and neutrino scattering off atomic nuclei. We find that, in the giant resonance region, the two processes excite different nuclear modes, therefore the weak and the…

核理论 · 物理学 2009-11-10 A. Botrugno , G. Co'

Elastic $^{16}$O+$^{12}$C scattering is known to exhibit the nuclear rainbow pattern at incident energies $E_\text{lab}\gtrsim 200$ MeV, with the Airy structure of the far-side scattering cross section clearly seen at medium and large…

核理论 · 物理学 2020-12-10 Nguyen Hoang Phuc , Dao T. Khoa , Nguyen Tri Toan Phuc

The quantitative description of the effects of nuclear dynamics on the measured neutrino-nucleus cross sections -- needed to reduce the systematic uncertainty of long baseline neutrino oscillation experiments -- involves severe…

核理论 · 物理学 2015-08-19 Omar Benhar , Noemi Rocco

Atomic electrons are sensitive to the properties of the nucleus they are bound to, such as nuclear mass, charge distribution, spin, magnetization distribution, or even excited level scheme. These nuclear parameters are reflected in the…

原子物理 · 物理学 2011-06-17 Adriana Pálffy

Large-angle elastic scattering of alpha-particle and strongly-bound light nuclei at a few tens MeV/nucleon has shown the pattern of rainbow scattering. This interesting process was shown to involve a significant overlap of the two colliding…

核理论 · 物理学 2007-05-23 Dao T. Khoa , W. von Oertzen , H. G. Bohlen , H. S. Than

This talk examines a number of reaction mechanisms for scattering initiated by an exotic projectile. Comparisons are made with recent experimental data, in order to extract information on the peculiarity of the nuclear structure under…

核理论 · 物理学 2009-11-10 Angela Bonaccorso
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