Matter radii of light proton-rich and neutron-rich nuclear isotopes

Ahmad, Sadaf; Usmani, A. A.; Khan, Z.

doi:10.1103/physrevc.96.064602

Cited by 33 publications

(31 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The quadrupole deformation β 2 is taken from the nuclear data tables of P Moller et al [62]. For the nuclei with Z < 10, the rms matter radius is directly taken from the data provided by Suhel Ahmad et al [63]. For nuclei with Z = 10 to Z = 20, the rms matter radius is calculated in terms of the quadrupole deformation β 2 using the formula (15), which provides a good approximation to the rms radius of a nucleus including halo.…”

Section: Resultsmentioning

confidence: 99%

“…For nuclei with Z = 10 to Z = 20, the rms matter radius is calculated in terms of the quadrupole deformation β 2 using the formula (15), which provides a good approximation to the rms radius of a nucleus including halo. For example, for 24 F, the rms radius given in [63] is 3.17 ± 0.05fm and using the equation 15, we get the rms radius of 24 F as 3.225 fm.…”

Section: Resultsmentioning

confidence: 99%

“…This is due to the fact that the rms radius (R rms ) of 15 C is less than the normal radius (R). From the equation 7, we get the radius as 2.72 fm and the rms radius of 15 C is given in reference [63] is 2.59 fm. In the case of other halo nuclei, the rms radius is larger than the normal radius and it is found that the half-life of decay is decreased when the rms radius is included in the calculation.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Theoretical Study on the Formation of 1-neutron and 2-neutron Halo Nuclei via Decay of Elements in Super-Heavy Region

Biju¹,

Prathapan²,

Anjali³

2020

J. Nucl. Phy. Mat. Sci. Rad. A.

View full text Add to dashboard Cite

The possibility for the existence of 1-neutron and 2-neutron halo nuclei through the decay of even-even nuclei 270-316116, 272-318118 and 278-320120 in the super-heavy region is studied within the frame work of the Coulomb and Proximity Potential Model (CPPM). Halo structure in neutron rich nuclei with Z<=20 is identified by calculating the neutron separation energies and on the basis of potential energy considerations. The 1n + core configuration of proposed 1-neutron halo nuclei between z=10 and Z=20 is found shifted to 2n + core configuration in higher angular momentum states. The calculation of half-life of decay is performed by considering the proposed halo nuclei as spherical cluster and as deformed nuclei with a rms radius. Except for 15C, the half-life of decay is found decreased when the rms radius is considered. Only the 1-neutron halo nuclei 26F and 55Ca showed half-lives of decay which are less than the experimental limit. None of the proposed 2-neutron halo nuclei have shown a half-life of decay lower than the experimental limit. Also, the probability for the emission of neutron halo nuclei is found to be less in super-heavy region when compared with the clusters of same isotope family. Further, neutron shell closure at neutron numbers 150, 164 and 184 is identified form the plot of log10 T1/2 verses the neutron number of parents. The plots of Q-1/2 verses log10 T1/2 and -ln P verses log10 T1/2 for various halo nuclei emitted from the super-heavy elements are found to be linear showing that Geiger-Nuttall law is applicable to the emission of neutron halo also.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical Study on the Formation of 1-neutron and 2-neutron Halo Nuclei via Decay of Elements in Super-Heavy Region

Biju¹,

Prathapan²,

Anjali³

2020

J. Nucl. Phy. Mat. Sci. Rad. A.

View full text Add to dashboard Cite

show abstract

“…The real parts of the input optical model potentials were calculated within the double-folding framework with the M3Y nucleon-nucleon effective interaction [16] using the code dfpot [17]. The required 12 C, 14 C and 15 C nuclear matter densities were taken from Dobrovolsky et al [18], and the 13 C density from Ahmad et al [19]. The imaginary parts of the optical potentials were of Woods-Saxon squared form, with depth W = 50 MeV, radius R W = 1.0 × (A…”

Section: (): V-volmentioning

confidence: 99%

Influence of halo single-neutron transfer on near barrier $$^{15}$$C + $$^{12}$$C total fusion

2021

View full text Add to dashboard Cite

A recent comparison of the average fusion cross section, $$\left\langle \sigma _\mathrm {F}\right\rangle $$ σ F , for energies just above the Coulomb barrier for the $$^{12-15}$$ 12 - 15 C + $$^{12}$$ 12 C systems found that the behaviour as a function of projectile neutron excess could not be satisfactorily explained by static barrier penetration model calculations and suggested that the neutron dynamics plays an important rôle. In this work we demonstrate that the ($$^{15}$$ 15 C,$$^{14}$$ 14 C) single neutron transfer has a significant influence on the above barrier $$^{15}$$ 15 C + $$^{12}$$ 12 C total fusion, although not quite in the way expected since it leads to a reduction in the cross section, contrary to the trend in the measured $$\left\langle \sigma _\mathrm {F}\right\rangle $$ σ F . However, this result underlines the danger of ignoring the effect of neutron transfer reactions on fusion in systems involving neutron halo nuclei.

show abstract

“…

Проведено порівняльний аналіз розрахунків для пружного розсіяння 12 С( 10 В, 10 В) 12 С при енергії Е лаб ( 10 B) = 41,3 МеВ, пружного розсіяння 12 С( 11 В, 11 В) 12 С при енергії Е лаб ( 11 B) = 40,0 МеВ, реакцій передач 13 С( 11 В, 12 С) 12 В та 14 С( 11 В, 12 С) 13 В при енергії Е лаб ( 11 B) = 45,0 МеВ за методом зв'язаних каналів реакцій (МЗКР) з використанням потенціалів взаємодії ядер вихідних каналів 10,11,12,13 В + 12 С у формі Вудса -Саксона (WS), визначених раніше, та потенціалів для цих систем, отриманих за моделлю подвійної згортки з використанням змодельованих теоретично форм розподілів густини протонів та нейтронів в ядрах 10,11,12,13 В та 12 С. Досліджується зв'язок ізотопічних ефектів (відмінності розрахованих МЗКР-перерізів при заміні потенціалу для визначеної пари ядер на потенціал взаємодії одного з ядер з ізотопом іншого ядра) з внутрішньою структурою, тобто формою розподілу густини нуклонів, у взаємодіючих ядрах. Порівняно форми (радіальні залежності) визначених раніше потенціалів WS та розрахованих за моделлю подвійної згортки потенціалів для систем ядер 10,11,12,13 В + 12 С. За результатами аналізу експериментальних даних зроблено припущення щодо можливих відмінностей поверхневих форм розподілів густин нуклонів, від змодельованих теоретично, в ізотопах 10,11 В.Ключові слова: ядерні реакції 12 C( 10 B, 10 В) 12 С, 12 C( 11 B, 11 В) 12 С, 13 C( 11 B, 12 С) 12 В, 14 C( 11 B, 12 С) 13 В, метод зв'язаних каналів реакцій, оптичні потенціали, розподіли густини нуклонів.

…”

unclassified

Potentials of interaction of 10,11,12,13B isotopes with 12C

Mezhevych¹,

Rudchik²,

Ponkratenko³

et al. 2022

Nucl. Phys. At. Energy

View full text Add to dashboard Cite

A comparative analysis of calculations for the 12С(10В,10В)12С elastic scattering at Еlab(10B) = 41.3 MeV, the 12С(11В,11В)12С elastic scattering at Еlab(11B) = 40.0 MeV, transfer reactions 13С(11В,12С)12В and 14С(11В,12С)13В at Еlab(11B) = 45.0 МеВ was performed within the coupled-reaction-channels method (CRC) using previously deduced Woods-Saxon potentials for the interaction of 10,11,12,13В + 12С nuclei in the exit reaction channels, as well as potentials for these systems of nuclei generated by means of the double-folding method using theoretically modeled shapes for the distributions of protons and neutrons in 10,11,12,13В and 12С. The relationship of isotopic effects (differences of the calculated CRC cross sections when replacing the potential for a given pair of nuclei by interaction potential for one nucleus with the isotope of another nucleus) with the internal structure, e.g. the shapes of nucleon density distributions in the interacting nuclei, is investigated. The shapes (radial dependence) of recently deduced Woods-Saxon potentials and potentials calculated by means of the double-folding methods for the systems of 10,11,12,13В + 12С nuclei are compared. Based on the results of the analysis of experimental data, an assumption is made about the possible differences in the shapes of surface nucleon density distributions from the ones modeled theoretically in 10,11B isotopes.

show abstract

Matter radii of light proton-rich and neutron-rich nuclear isotopes

Cited by 33 publications

References 43 publications

Theoretical Study on the Formation of 1-neutron and 2-neutron Halo Nuclei via Decay of Elements in Super-Heavy Region

Theoretical Study on the Formation of 1-neutron and 2-neutron Halo Nuclei via Decay of Elements in Super-Heavy Region

Influence of halo single-neutron transfer on near barrier $$^{15}$$C + $$^{12}$$C total fusion

Potentials of interaction of 10,11,12,13B isotopes with 12C

Contact Info

Product

Resources

About