• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Saturday, October 4, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Science

Measurements yielded precise atomic masses for nuclear reactions in the stars

Bioengineer by Bioengineer
March 7, 2019
in Science
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

In her doctoral thesis in the field of nuclear physics at the University of Jyväskylä, M. Sc. Laetitia Canete has precisely measured the atomic masses of the radioactive isotope of six elements.

Our body and the matter around us is composed of chemical elements mainly created in stars via nuclear reactions and complex nuclear reaction networks. To understand these processes, we need to know properties of participating nuclei, such as their masses.

In her doctoral thesis in the field of nuclear physics at the University of Jyväskylä, M. Sc. Laetitia Canete has precisely measured the atomic masses of the radioactive isotope of six elements. The measurement data can be used to better model different astrophysical processes.

Nuclear reactions make the Sun shine and play a central role in the chemical evolution of the cosmos. Our body and the matter around us is composed of chemical elements mainly created in stars via nuclear reactions and complex nuclear reaction networks. To understand these processes, we need to know properties of participating nuclei, such as their masses. Here precision matters as even a tiny change in the nuclear mass can have a significant impact on reaction rates and finally on the abundances of produced elements.

In a doctoral thesis in the field of nuclear physics at the University of Jyväskylä, M. Sc. Laetitia Canete has measured the atomic masses of the radioactive isotope of six elements. The measurement data can be used to better model different space processes.

In the JYFL Accelerator Laboratory of the University of Jyväskylä, stable ion beams from the K-130 cyclotron are used to produce nuclei relevant for nuclear astrophysics by impinging them into a thin target foil at the IGISOL (Ion Guide Isotope Separator On-Line ) facility. The produced radioactive isotopes are transported into the JYFLTRAP double Penning trap mass spectrometer where their atomic mass values are determined with a precision of around 10 ppb. During her PhD, Laetitia Canete measured masses of six radioactive nuclei, 25Al, 30P, 31Cl, 67Fe, 69Co and 70Co.

The measurements are relevant for various astrophysical problems. The production of the observed cosmic 1809-keV g-rays originating from 26Al can be bypassed by proton captures on 25Al. The proton-capture rate, and thus the amount of produced 1809-keV g-rays, is affected by the mass of 25Al. The mass of 30P is important for constraining the proton-capture rate on 30P(p,g)31S controlling the production of elements heavier than sulphur in novae. The mass of 31Cl plays a role in type I X-ray bursts, and is also important for understanding fundamental properties of the nuclear force between protons and neutrons. The masses of 67Fe, 69Co and 70Co play a role in the rapid neutron capture process producing around half of the elements heavier than iron.

Laetitia Canete completed her Master degree in subatomic physics and astrophysics at the University Lyon 1, France, in 2014. She entered at the Department of Physics of the University of Jyväskylä in summer 2014 and started her doctoral studies within the IGISOL group in the Accelerator Laboratory of the University of Jyväskylä.

###

The dissertation “High precision mass measurements for nuclear astrophysics” is published in JYU dissertations series, University of Jyväskylä, 2019, ISSN 2489-9003; 64
ISBN: 978-951-39-7693-4

More information:

Coctoral Student Laetitia Canete, [email protected]

Communications Officer Tanja Heikkinen, [email protected], tel. +358 50 581 8351

Media Contact
Doctoral Student Laetitia Canete
[email protected]
http://urn.fi/URN:ISBN:978-951-39-7693-4

Tags: AstrophysicsAtomic/Molecular/Particle PhysicsChemistry/Physics/Materials SciencesElectromagneticsNuclear PhysicsStars/The Sun
Share14Tweet8Share2ShareShareShare2

Related Posts

Five or more hours of smartphone usage per day may increase obesity

July 25, 2019
IMAGE

NASA’s terra satellite finds tropical storm 07W’s strength on the side

July 25, 2019

NASA finds one burst of energy in weakening Depression Dalila

July 25, 2019

Researcher’s innovative flood mapping helps water and emergency management officials

July 25, 2019
Please login to join discussion

POPULAR NEWS

  • New Study Reveals the Science Behind Exercise and Weight Loss

    New Study Reveals the Science Behind Exercise and Weight Loss

    94 shares
    Share 38 Tweet 24
  • New Study Indicates Children’s Risk of Long COVID Could Double Following a Second Infection – The Lancet Infectious Diseases

    90 shares
    Share 36 Tweet 23
  • Physicists Develop Visible Time Crystal for the First Time

    75 shares
    Share 30 Tweet 19
  • New Insights Suggest ALS May Be an Autoimmune Disease

    70 shares
    Share 28 Tweet 18

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Selective Arylating Uncommon C–F Bonds in Polyfluoroarenes

HIRAID Framework Enhances Nurse and Patient Outcomes

tRF-34-86J8WPMN1E8Y2Q Fuels Gastric Cancer Progression

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 62 other subscribers
  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.