Three-dimensional nuclear chart—understanding nuclear physics and nucleosynthesis in stars

Koura, Hiroyuki

doi:10.1088/0031-9120/49/2/215

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…Knowledge on the limits of the chart of atomic nuclei is also relevant to current astrophysical research. In particular, the rapid neutron capture process (or r-process) is partly responsible for the nucleosynthesis of nuclei above 56 Fe [27]. This process takes place in the neutron-rich side of the nuclear chart, way beyond the stability valley, and in some cases also beyond the limits of presently known isotopes.…”

Section: Binding Energymentioning

confidence: 99%

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 1)

Pastore¹,

Romero²,

Diget³

et al. 2021

Phys. Educ.

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We present a simple activity based on the liquid-drop model which allows secondary school students to explore the uses of mathematical models and gain an intuitive understanding of the concept of binding energy, and in particular the significance of positive binding energy. Using spreadsheets provided as supplementary material, students can perform simple manipulations on the different coefficients of the model to understand the role of each of its five terms. Students can use the spreadsheets to determine model parameters by optimising the agreement with real atomic mass data. This activity can be used as the starting point of a discussion about theoretical models, their validation when it comes to describing experimental data and their predictive power towards unexplored regimes.

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Section: Binding Energymentioning

confidence: 99%

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 1)

Pastore¹,

Romero²,

Diget³

et al. 2021

Phys. Educ.

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show abstract

“…We recall that 1 J=6. A = 56 [29] is largely due to the so-called rapid neutron capture process (or r-process) -which is sensitive to nuclear masses. From a theoretical perspective, it is difficult to provide a microscopic description of nuclear masses with the same level of accuracy that is reached in experiments [30,31].…”

Section: The Liquid Drop Modelmentioning

confidence: 99%

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 2)

Rios¹,

Pastore²,

Diget³

et al. 2021

Preprint

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We introduce two simple online activities to explore the physics of neutron stars. These provide an introduction to the basic properties of compact objects, like their masses and radii, for secondary school students. The first activity explores the idea of the minimum mass of a neutron star. It is directly linked to the concept of binding energy and follows on from our previous activities. The second activity focuses on the maximum mass of neutron stars using a solvable model of the neutron star interior. The activities are based on spreadsheets, provided as Supplementary Material, and can be easily adapted to different levels, age groups and discussion topics. In particular, these activities can naturally lead towards discussions on extrapolations and limits of theoretical models.

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“…Knowledge on the limits of the chart of atomic nuclei is also relevant to current astrophysical research. In particular, the rapid neutron capture process (or r-process) is partly responsible for the nucleosynthesis of nuclei above 56 Fe [32]. This process takes place in the neutron-rich side of the nuclear chart, way beyond the stability valley, and in some cases also beyond the limits of presently known isotopes.…”

Section: Binding Energymentioning

confidence: 99%

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (Part 1)

Pastore,

Romero,

Diget

et al. 2020

Preprint

View full text Add to dashboard Cite

We present a simple activity based on the liquid-drop model which allows secondary school students to explore the uses of mathematical models and gain an intuitive understanding of the concept of binding energy, and in particular the significance of positive binding energy. Using spreadsheets provided as Supplementary Material, students can perform simple manipulations on the different coefficients of the model to understand the role of each of its five terms. Students can use the spreadsheets to determine model parameters by optimising the agreement with real atomic mass data. This will subsequently be used to predict the limit of existence of the Segré chart and to find the minimum mass of a neutron star. This activity can be used as the starting point of a discussion about theoretical models, their validation when it comes to describing experimental data and their predictive power towards unexplored regimes.

show abstract

Three-dimensional nuclear chart—understanding nuclear physics and nucleosynthesis in stars

Cited by 7 publications

References 10 publications

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 1)

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 1)

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (part 2)

From nuclei to neutron stars: simple binding energy computer modelling in the classroom (Part 1)

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