Homepage of Artemis Tsantiri

Carina Nebula JWST Image credit: NASA, ESA, CSA, and STScI

Artemis Tsantiri

I am a Postdoctoral Research Fellow at the University of Regina working with Prof. Gwen Grinyer on experiments at TRIUMF. I obtained my PhD in nuclear astrophysics at the Facility for Rare Isotope Beams at Michigan State University working under Prof. Artemis Spyrou in the SuN group. I received my diploma from the School of Applied Mathematical and Physical Sciences of the National Technical University of Athens with Prof. Mike Kokkoris as my supervisor.

I am interested nuclear astrophysics, the study of the mechanisms that form the chemical elements in the cosmos. By using experimental techniques I study nuclear reactions that take place inside stars.

News

IReNA Online Seminar Series

This year I'm part of the IReNA Online Seminar Organizing Committee, a group of postdocs organizing a biweekly series of seminars on nuclear astrophysics. Seminars are recorded and can be viewed on the IReNA YouTube channel.

ACTAR TPC @ TRIUMF

Starting in my postdoc position, I spent the summer of 2025 at TRIUMF, working with the Active Target and Time Projection Chamber (ACTAR TPC) from GANIL. The campaign included three experiments, one of which I will analyze as part of my postdoctoral research.

Invited Talk

I was honored to give my first invited talk at the BRIDGCE-IReNA 2025 Annual Meeting, where I presented my PhD thesis work on the production of ⁷⁴Se in the astrophysical γ process. It was a great opportunity to share my research and connect with many new researchers. I am grateful to the organizers for the invite and to IReNA for supporting my attendance.

PhD Thesis Defense

On March 17th, 2025, I successfully defended my PhD thesis!

The work regards to proton-capture cross-section measurements for the astrophysical γ process, with main focus on the first measurement of ⁷³As(p,γ)⁷⁴Se, one of the main destruction mechanisms of the lightest p nucleus, ⁷⁴Se. Using network calculations of the γ process in Type II supernovae, we showed that our measured cross section significantly reduces the uncertainty in ⁷⁴Se production!

IReNA Young Researchers Organization Blog

The academic journey is filled with unique challenges and opportunities, so we created a blog to share stories of navigating it.

Find more about the blog and how to participate.

Student Representative of IReNA's Young Reasearchers Organization

I'm so excited to become the new student representative of the IReNA Steering Committee and Young Reasearchers Organization! See full article here.

Find more about IReNA and the participating networks here.

Detroit Free Press

The Detroit Free Press published a story about FRIB in which I appear while giving a tour for Michigan Math and Science Scholars.

See photo gallery here and read full article here

CeNAM Frontiers in Nuclear Astrophysics

I had the honor of being the co-chair of the Organizing Committee for the 2023 CeNAM Frontiers in Nuclear Astrophysics Meeting at FRIB.

Read article here.

Publications

2025

Greaves et al, Nov 2025, Phys. Lett. B, 139992
Probing the Limits of Statistical Neutron Capture for the r process: Experimental Constraints on ¹⁴¹Cs Nuclear Level Densities
Ronning et al, Aug 2025, Nucl. Instrum. Methods Phys. Res. A, 170930
The upgraded summing NaI(Tl) (SuN++) absorption spectrometer
Ogunbeku et al, Aug 2025, Phys. Rev. Lett. 135, 072501
Universal Effective Charges in the sd and fp Shells
Wheeler et al, Jun 2025, Nucl. Instrum. Methods Phys. Res. A, 1080, 170659
Object detection with deep learning for rare event search in the GADGET II TPC
Owens-Fryar et al, Jun 2025, Phys. Rev. C 111, 065801
Total absorption spectroscopy for the β⁺ decay strength distribution of ⁶⁰Ga
Tsintari et al, Jan 2025, Phys. Rev. Research 7, 013074
Machine learning enabled measurements of astrophysical (p,n) reactions with the SECAR recoil separator

2024

Spyrou et al, May 2024, Phys. Rev. Lett. 132, 202701
First Study of the ¹³⁹Ba(n,γ)¹⁴⁰Ba Reaction to Constrain the Conditions for the Astrophysical i Process
Cox et al, April 2024, Phys. Rev. Lett. 132, 152503
Proton Shell Gaps in N = 28 Nuclei from the First Complete Spectroscopy Study with FRIB Decay Station Initiator

2023

Pogliano et al, June 2023, Phys. Rev. C 107, 064614
Experimentally constrained ^165,166Ho(n,γ) rates and implications for the s process
Tsantiri et al, March 2023, Phys. Rev. C 107, 035808
Cross-section measurement of the ⁸²Kr(p,γ)⁸³Rb reaction in inverse kinematics

2022

Palmisano-Kyle et al, June 2022, Phys. Rev. C 105, 065804
Constraining the astrophysical p process: Cross section measurement of the ⁸⁴Kr(p,γ)⁸⁵Rb reaction in inverse kinematics

2021

Michalopoulou et al, September 2021, European Physical Journal A 57(9),
Measurement of the ²³²Th(n,f) cross section with quasi-monoenergetic neutron beams in the energy range 2–18 MeV
Erratum on November 2021, European Physical Journal A 57(11)

2020

Chasapoglou et al, April 2020, HNPS Advances in Nuclear Physics 27:106
Study of the ²³²Th(n,f) Cross section at NCSR ‘Demokritos’ using Micromegas Detectors