2019 CAP Congress / Congrès de l'ACP 2019

Session

M1-5 Nuclear Astrophysics (DNP) | Astrophysique nucléaire (DPN)

M1-5

3 Jun 2019, 10:45

Simon Fraser University

Conveners

M1-5 Nuclear Astrophysics (DNP) | Astrophysique nucléaire (DPN)

• Barry Davids (TRIUMF)

2695. Modern-day precision mass measurements and the astrophysical r process

Rodney Orford (Lawrence Berkeley National Laboratory)

03/06/2019, 10:45

Nuclear Physics / Physique nucléaire (DNP-DPN)

Invited Speaker / Conférencier(ère) invité(e)

The challenge of identifying the astrophysical site(s) of the rapid neutron capture ($r$) process, which is responsible for the creation of half of the heavy elements found today, is a multifaceted one which requires input from a gamut of disciplines including observation, theory, and experiment. More experimental data, particularly of nuclear masses, on the neutron-rich side of stability is...

2467. Mass measurements with the Canadian Penning Trap mass spectrometer to study the astrophysical r process

Dwaipayan Ray (University of Manitoba)

03/06/2019, 11:15

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

About half of the elements in the universe heavier than iron ($^{56}$Fe) are believed to be produced via the $r$ process (rapid neutron capture process), which is thought to occur during explosive astrophysical events. Due to the short-lived nature of these nuclides and the unique conditions necessary for the occurrence of the $r$ process, our knowledge of this topic is limited. Observations...

2507. Investigation of High-Lying (𝜶,𝜸) Resonances in 22Ne via High-Resolution Gamma Ray Spectroscopy in Inverse Kinematics

Mr Beau Greaves (University of Windsor)

03/06/2019, 11:30

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

In asymptotic giant branch (AGB) stars, 22Ne plays an important role in several nucleosynthesis processes, with its production competing with the synthesis of 19F through the so called ‘poisoning reaction’, and the following transfer into 25Mg acting as the main neutron sources for the heavy element s-process, affecting the reaction rates of numerous isotopes.

In this contribution, we discuss...

2534. Decay Spectroscopy of Neutron-Rich Cd Around the N = 82 Shell Closure with GRIFFIN

Mr Yukiya Saito (The University of British Columbia / TRIUMF)

03/06/2019, 11:45

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Nuclei around doubly magic $^{132}$Sn are of particular interest in nuclear structure as well as nuclear astrophysics. The evolving shell structure near the shell closure is ideal for testing the current nuclear models far from stability. Additionally, the extra binding energy observed around $^{132}$Sn has direct implications in astrophysical models, leading to the second r-process abundance...

2626. Evolution of the N=82 Neutron-Deficient Shell Closure and Pushing Toward the Proton Drip-Line at TITAN

Brian Kootte

03/06/2019, 12:00

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

In the region where the expected N=82 shell closure approaches the proton drip-line, we are confronted with our poor knowledge of the nuclear binding energies. Precision experimental data is critical if we are to gain an understanding of how this neutron shell evolves for the heaviest N=82 isotones. The binding energies of neutron deficient nuclei can also reveal the exact location of the...