From the Big Bang to the Nucleosynthesis ( International School of Physics “Enrico Fermi” )

Publication series : International School of Physics “Enrico Fermi”

Author: Bracco A.;Nappi E.  

Publisher: Ios Press‎

Publication year: 2012

E-ISBN: 9781607509745

P-ISBN(Paperback): 9781607509738

Subject: O4 Physics

Keyword: 物理学

Language: ENG

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Description

Physicists have devoted much effort to reproducing the conditions of the primordial universe in laboratory conditions in their quest to work out a comprehensive theory of the appearance and evolution of nuclear matter. Whether it be trying to recreate the predicted primordial state of high-energy density matter in which quarks and gluons are effectively deconfined - the so-called Quark Gluon Plasma (QGP) - or exploring the structure and reaction properties of very unstable nuclei in experiments using radioactive beams, they have striven to understand the events which characterized the Big Bang and the various nucleosynthesis mechanisms which occur in the stars. This book contains the proceedings of the 2010 Enrico Fermi summer school held in Varenna, Italy, in July 2010, and devoted to the present understanding of the primordial universe and the origin of the elements, as achieved by studying nuclei and their constituents in extreme regimes of energy and composition. Subjects covered include: QGP formation; exotic nuclei, their degrees of freedom from the ground state and the properties of the excited states; the complex, but appealing theory describing the supernovae explosion and neutron stars; dark energy and matter; Big Bang nucleosynthesis and energy and solar neutrino production; nuclear cosmochronology; beta and gamma decay relevant for the nucleosynthesis of heavy nuclei. The annual Enrico Fermi summer school is internationally renowned and this book will be of grea

Chapter

The theory of Neutron Stars and the role of Nuclear Physics

Introduction

Overall structure of a Neutron Star

The outer crust

The inner crust

The outer core

The inner core

The free Fermi gas of nucleons

The Equation of State

The compressibility

Momentum distribution

The symmetry energy

The single particle density of states

The Pauli paramagnetism

Other microscopic physical quantities

Introducing the interaction

Sketch of the nucleon-nucleon interaction

Theoretical many-body methods

The Brueckner-Bethe-Goldstone expansion

The variational method

The relativistic approach

The V low approach

Trying a link to QCD: the chiral symmetry approach

Neutron matter at very low density. An exercise in many-body theory

A single G-matrix problem

The "exact" EoS

Going to nuclear structure

The Thomas-Fermi approximation and implementations

The density functional method

Nuclear Physics and Neutron Star structure

The Neutron Star inner crust

The Neutron Star core and mass-radius relationship

Conclusions and outlook

Spin-isospin modes: Implications for astrophysics

Introduction

The compression modes and incompressibility of nuclear matter

Spin-isospin excitations

GT strength in fp-shell nuclei

Determination of GT- strength

Determination of GT+ strength and its astrophysical implications

Conclusions and outlook

NUCLEAR STRUCTURE AND NUCLEAR ASTROPHYSICS WITH RADIOACTIVE BEAMS

Nuclear-astrophysics experiments with relativistic radioactive beams

Introduction

Experiments with high-energy radioactive beams at GSI

Mass measurements

The dipole response of exotic nuclei

Future perspectives-NuSTAR at FAIR

The FAIR facility

The radioactive beam facility

Experiments with slowed-down and stopped beams

The low-energy branch

High-resolution in-flight spectroscopy (HISPEC)

Decay spectroscopy (DESPEC)

The advanced trapping system MATS

The laser-spectroscopy experiment LASPEC

Reactions with Relativistic Radioactive Beams (R3B)

Experiments with stored and cooled beams

Isomeric beams, lifetimes, and masses (ILIMA)

Reactions at internal targets in the NESR (EXL)

Electron scattering with short-lived nuclei (ELISe)

The Antiproton-Ion-Collider AIC

Conclusion

Nuclear structure studies at RIKEN: New measurements with in-flight fast radioactive beams

Introduction

RIBF new facility

Frontiers in the nuclear chart

Nuclear chart

Toward the r-process path

Super-heavy nuclei

Fate of magic numbers

Disappearance of the N = 20 magic number

Neutron-proton asymmetry: "egg" structure in 16C

Challenges at RIBF

SHARAQ

SAMURAI

SCRIT

SLOWRI

Rare RI-ring

Conclusions

ISOL techniques to reach radioactive nuclei: From birth to EURISOL

Introduction

History of ISOL

Targets and ion sources

Surface ion source

Plasma ion source

Laser ion source

Accelerated radioactive beam facilities

Louvain-la-Neuve

Holifield Radioactive Ion Beam Facility

SPIRAL

REX-ISOLDE

ISAC

Other ISOL RIB facilities

Other ISOL techniques: IGISOL, Gas catchers and FRIB

Ion guide

Gas catcher

FRIB

Second-generation facilities in Europe

SPES

HIE-ISOLDE

EURISOL

Final words

Low-energy reactions, moments and beta-decays with radioactive beams for nuclear structure and astrophysics problems. Results and perspectives with SPIRAL2

Introduction

Goals and new avenues for physics with Radioactive Ion Beams

GANIL, SPIRAL and SPIRAL2 facilities

SPIRAL 2 Facility

SPIRAL 2 Driver Accelerator

Superconducting LINAC

Production of Radioactive Ion Beams at SPIRAL 2

Simultaneous operation of the GANIL/SPIRAL1/SPIRAL2 facility

The civil construction of the SPIRAL2 facility

Experiments with high-intensity stable-ion beams

S3

Final focal-plane detectors

Low-energy branch of S3

In-flight experiments with S3

Very-heavy nuclei and Superheavy elements (SHE)

Neutron-deficient nuclei

Neutron-rich nuclei with transfer and deep inelastic reactions

Experiments with low energy radioactive ion beams

DESIR

Physics case of DESIR

Beta-decay measurements of astrophysical interest

Experiments with post-accelerated RIB

EXOGAM 2

AGATA

PARIS

NEDA

GASPARD

FAZIA

ACTAR

HELIOS

Conclusions and outlook

THE QUARK-GLUON PLASMA AND BEYOND

Heavy-ion collisions - Selected topics

Preamble

Introduction

Kinematic variables

Invariant cross-sections

Multiplicity distributions

Glauber theory

Nucleon-nucleus (n-A) collisions

Nucleus-nucleus (A-B) collisions

Characterizing the collisions geometry by multiplicity distributions

Slicing-up multiplicity distributions

Constraining dynamical models by multiplicity distributions

Particle production with respect to the reaction plane

The cumulant method for n-th-order flow

Elliptic flow at RHIC and at the LHC

Hydrodynamic modeling of heavy-ion collisions

Tensor decomposion of T mu nu

Equations of motion for a perfect fluid

Bjorken boost-invariant ideal fluid

Simulating a Bjorken boost-invariant perfect fluid

Dissipative corrections to perfect-fluid dynamics

Numerical results for dissipative hydrodynamics

Hard probes

High-pT single inclusive hadron spectra in nucleus-nucleus collisions

Scattering of highly energetic partons in nuclear matter

Gluon radiation off quarks produced in the medium

Comparing parton energy loss calculations to data on RAA

From single inclusive hadron suppression to reconstructed jet quenching

Open-charm analysis for energy loss studies with ALICE at LHC

Introduction

ALICE performance

Expected performance for D0 -> K pi analysis in p-p

Status of the analysis of p-p collisions at s = 7 TeV

Conclusions

Dark matter: A window to New Physics at the electroweak scale

Introduction

The Standard Model of particle physics

The Higgs mechanism and vector boson masses

Fermion masses

Successes and difficulties of the SM

The dark matter problem: experimental evidence

Lepton number violation and neutrinos as HDM candidates

Neutrino masses in the SM and beyond

Thermal history of neutrinos

HDM and structure formation

Low-energy SUSY and DM

Neutralinos as the LSP in SUSY models

Neutralinos in the Minimal Supersymmetric Standard Model

Thermal history of neutralinos and OmegaCDM

Changing the expansion rate in the past

GR as a fixed point

Implications for dark matter in the CMSSM

Conclusion

Primordial nucleosynthesis in the presence of sterile neutrinos

Introduction

Sterile neutrinos

Hubble factor and cosmological time

Computed abundances with sterile neutrinos

Conclusions

LOW-ENERGY REACTIONS FOR ASTROPHYSICS

The LUNA experiment at LNGS

Introduction

Why underground: the LUNA project

Results

On-going measurements

The future: LUNA MV project

Nuclear astrophysics results with the Trojan Horse Method

Introduction

Basic theory

Energy prescriptions

PWIA: applicability conditions

Experimental momentum distribution

PWIA

DWBA

Data analysis

Selection of the Trojan horse nucleus

QF data selection: study of momentum distribution in angular correlation

Extraction of the two-body cross-section from the measured three-body reaction

Validity tests of pole approximation

Comparison of excitation functions

A1) sigma(E) above the Coulomb barrier

A2) sigma(E) below the Coulomb barrier

A3) above and below the Coulomb barrier

Comparison of the angular distributions: above and below the Coulomb barrier

Results

Astrophysics applications: The light element depletion problem

The 7Li(p, alpha)4He reaction

The 6Li(p, alpha)3He reaction

The 6Li(d, alpha)4He reaction

Conclusions

Neutron capture measurements at the CERN neutron time-of-flight facility: Nuclear astrophysics aspects

Introduction

The n_TOF facility

The experimental setup

The neutron capture measurements

Measurements of astrophysical interest

The 90,91,92,93,94,96Zr(n, gamma), 139La reactions

The 151Sm reaction

The 186,187,188Os(n, gamma) reactions

Conclusions

NUCLEAR STRUCTURE FOR ASTROPHYSICS

Isomeric states in neutron-rich lead isotopes populated by fragmentation of 238U at 1 GeV A

Introduction

Experimental details

Identification of nuclear species

Isomeric decay

Conclusion and perspectives

Neutron spectroscopic factors

Introduction

Extraction of spectroscopic factors from transfer reactions

Survey of spectroscopic factors from transfer reactions for stable nuclei

Transfer reaction measurements for exotic Ar isotopes

Conclusions

Measurement of isospin mixing in hot 80Zr compound nucleus

Isospin mixing in nuclei

Measurement of isospin symmetry via Giant Dipole Resonance

Description of the experiment

Data analysis

Data reduction

Statistical model analysis

Results and conclusions

POSTERS

Identification of hadrons at high momentum with the HMPID detector in the ALICE experiment at the LHC

Introduction

The ALICE-HMPID detector

Analysis and results

Conclusion

New studies of the dynamical dipole in asymmetric heavy-ion reactions: A probe of the nuclear equation of state

Introduction

Experimental setup

Preliminary results

A pair spectrometer for E0 transitions measurements

E0 transitions

Pair creation by internal conversion

The pair spectrometer

Monte Carlo simulation of the detector performances

Conclusions

Study of high-lying states in 208Pb with the AGATA Demonstrator

Introduction

Experimental setup and data analysis

Conclusions

Recent developments in gamma-ray spectroscopy with new scintillators, LaBr3(Ce), to investigate nuclear structure at high excitation and far from stability

Introduction

Methods

Application

Order-to-chaos transition in warm rotating 174W nuclei

Introduction

The experiment

Elenco dei partecipanti

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