Molecular evolution: How the building blocks of life may form in space
In a laboratory experiment that mimics astrophysical conditions, with cryogenic temperatures in an ultrahigh vacuum, scientists used an electron gun to irradiate thin sheets of ice covered in basic...
View ArticleThe radiation released by Hiroshima bone has marked human bones
On Aug. 6, 1945, the United States dropped an atomic bomb nicknamed “Little Boy” on Hiroshima, Japan, leading to a nuclear blast that instantly claimed about 45,000 lives. Now, the jawbone of one of...
View ArticleThe Weak Side of the Proton
Today I am simply copying the press release announcing the precision measurement of the proton’s weak charge. For the original publication check this URL *** Canadian researchers played a major role...
View ArticleQuantum Simulation of the Quantum Rabi Model in a Trapped Ion
The quantum Rabi model, involving a two-level system and a bosonic field mode, is arguably the simplest and most fundamental model describing quantum light-matter interactions. Historically, due to the...
View ArticleAccurate measurement of the first excited nuclear state in 235U
We have used superconducting high-resolution radiation detectors to measure the energy level of metastable 235mU as 76.737 ± 0.018 eV. The 235mU isomer is created from the α decay of 239Pu and embedded...
View ArticleDark Matter Interpretation of the Neutron Decay Anomaly. Is this the solution...
There is a long-standing discrepancy between the neutron lifetime measured in beam and bottle experiments. We propose to explain this anomaly by a dark decay channel for the neutron, involving one or...
View ArticleThe First Lady of Physics
When her ocean liner, the President Hoover, docked in San Francisco in 1936, Wu Chien-Shiung was surprised to find that discrimination against women was par for the course in the United States. She was...
View ArticleMicro-bubble implosion, a reverse Big Bang
Laser pulse compression technology invented in the late 1980s resulted in high-power, short-pulse laser techniques, enhancing laser intensity 10 million-fold in a quarter of a century. Scientists at...
View ArticleMachine Learning approaches on submarine volcanic systems
The morphology and the activity of a submarine caldera, Avyssos, at the northern part of Nisyros volcano in the South Aegean Sea (Greece), has been studied by means of remotely-operated underwater...
View ArticleNucleon axion coupling and the lifetime of the neutron
Experiments that measure the lifetime of neutrons reveal a perplexing and unresolved discrepancy. While this lifetime has been measured to a precision within 1 percent using different techniques,...
View ArticleRevelations from the dissolved 226Ra-228Ra pair distribution in the South...
While it is confirmed that 226Ra is an interesting tracer of the water masses encountered along the GP16 US East Pacific Zonal Transect (EPZT) section cruise, 228Ra data coupled to the dissolved iron...
View ArticleProbing Sizes and Shapes of Nobelium Isotopes by Laser Spectroscopy
Until recently, ground-state nuclear moments of the heaviest nuclei could only be inferred from nuclear spectroscopy, where model assumptions are required. Laser spectroscopy in combination with modern...
View ArticleThe Heidelberg compact electron beam ion traps
Electron beam ion traps (EBITs) are ideal tools for both production and study of highly charged ions (HCIs). In order to reduce their construction, maintenance, and operation costs, we have developed a...
View ArticleQuantum electrodynamics and the proton size
Finding discrepancies between the predictions of fundamental theories and experimental observations is the main driver to develop physics further — the route to more advanced theories (‘new physics’)...
View ArticleThe limits of nuclear mass and charge
Four new elements with atomic numbers Z = 113, 115, 117 and 118 have recently been added to the periodic table. The questions pertaining to these superheavy systems are at the forefront of research in...
View ArticleKeeping it radioactive: This is how a molten salt nuclear reactor works
Radioactive elements produce heat as they decay. Nuclear plants draw power from this process, and typically stabilize the temperature with water. But during a power outage, H2O—which needs pumps to...
View ArticleΑχ, πού’σαι, νιότη, που’δειχνες, πως θα γινόμουν άλλος.
Πάλι μεθυσμένος είσαι, δυόμισι η ώρα της νυχτός. Κι αν τα γόνατα σου τρέμαν, “εκρατιόσουνα” στητός μπρός στο κάθε τραπεζάκι. – Γεια σου Κωνσταντή βαρβάτε! -Καλησπερούδια αφεντικά, πώς τα καλοπερνάτε;...
View ArticleThe Journey of Actinium-225: How Scientists Discovered a New Way to Produce a...
Inside a narrow glass tube sits a substance that can harm or cure, depending on how you use it. It gives off a faint blue glow, a sign of its radioactivity. While the energy and subatomic particles it...
View ArticleProbing the fusion of neutron-rich nuclei with re-accelerated radioactive beams
We report the first measurement of the fusion excitation functions for 39,47K+28Si at near-barrier energies. Evaporation residues resulting from the fusion process were identified by direct measurement...
View ArticleGeneric features of the neutron-proton interaction
We show that fully aligned neutron-proton pairs play a crucial role in the low-energy spectroscopy of nuclei with valence nucleons in a high-j orbital. Their dominance is valid in nuclei with valence...
View ArticleIsoscalar and isovector spin response in sd-shell nuclei
The spin magnetic-dipole transitions and the neutron-proton spin-spin correlations in sd-shell even-even nuclei with N=Z are investigated by using shell-model wave functions taking into account...
View ArticleImproved evaluation of nuclear charge radii for superheavy nuclei
Although significant progress has been made in the synthesis of superheavy nuclei, the experimental knowledge of them is still very limited while the alpha decay chain is the main tool used to identify...
View ArticleHow deadly is your kilowatt?
Everyone’s heard of the carbon footprint of different energy sources, the largest footprint belonging to coal because every kWhr of energy produced emits about 900 grams of CO2. Wind and nuclear have...
View ArticleArticle 2
Magic Nature of Neutrons in 54Ca: First Mass Measurements of 55-57Ca Read full article on Phys. Rev. Lett.
View ArticleHey fatty, live your (short) life on the edge: the discovery of the heaviest...
Discovery of 60Ca and implications for the stability of 70Ca Read full article on Phys. Rev. Lett.
View ArticleNuclear-Spin Comagnetometer Based on a Liquid of Identical Molecules
Atomic comagnetometers are used in searches for anomalous spin-dependent interactions. Magnetic field gradients are one of the major sources of systematic errors in such experiments. Here we describe a...
View ArticleEIC: a new billion-$$ electron accelerator to look inside protons and neutrons
The next dream machine for U.S. nuclear physicists got an important boost today in a report from the National Academies of Sciences, Engineering, and Medicine. The report committee glowingly approved...
View ArticleRadioactive molecules in space – a first detection!
After a long search, a cosmic mystery has an answer. Astronomers have made the very first unambiguous detection of a radioactive molecule in space – an isotope of aluminium, found in the heart of a...
View Article(Σκληρο)πυρηνική φυσική
Για τους πρωτοετείς φοιτητές που παρακολούθησαν το σεμιναριακό μάθημα της προηγούμενης Πέμπτης καιι εξέφρασαν το ενδιαφέρον τους να μάθουν περισσότερα για την πυρηνική φυσική και τις εφαρμογές της,...
View ArticleΦάσματα εργαστηρίου κατεύθυνσης
Για κάθε ενδιαφερόμενο/η που έχει ασκηθεί στο Εργαστήριο Κατεύθυνσης και στην άσκηση 4 (Ραδιενέργεια Περιβάλλοντος): Τα φάσματα που έχουν ληφθεί κατά τη διάρκεια της άσκησης, και τα οποία πρέπει να...
View ArticleΣυνάντηση με πρωτοετείς
Ενημερώνονται οι πρωτοετείς που ενδιαφέρθηκαν για συνεργασία ότι θα είμαι διαθέσιμος να σας συναντήσω την Τετάρτη 28.11 μεταξύ 10-12’00 στο γραφείο μου (κτήριο V, 34Β, τομέας Πυρηνικής). Κάποιοι έχετε...
View ArticleAcademy of Athens Awards 2018
I feel great honor and joy in announcing that I am this year’s recipient of the prestigious Academy of Athens Award in “Experimental Physics” (Award “G. Foteinos”). The award is related to the...
View Article[paper] Isoscalar Spin Matrix Elements in s–d Shell Nuclei
Isoscalar Spin Matrix Elements in s–d Shell Nuclei by Akito Arima and Wolfgang Bentz doi: 10.7566/JPSCP.23.012011 The quenching of isovector spin matrix elements in s–d shell nuclei is well established...
View Article[Paper] Nuclear processes in astrophysics: Recent progress
Nuclear processes in astrophysics: Recent progress by V. Licciardo et al. doi: 10.1140/epja/i2018-12648-5 The question about the origin of the elements is a fascinating one, that scientists have been...
View Article[paper] Interplay between nuclear shell evolution and shape deformation...
Interplay between nuclear shell evolution and shape deformation revealed by the magnetic moment of 75Cu Y. Ishikawa et al. Nature Physics (2019) DOI: 10.1038/s41567-018-0410-7 Exotic nuclei are...
View ArticleA long-due photo from the Academy of Athens Awards
As I have posted in an earlier post I am the happy(-est) recipient of the Academy of Athens Award for “Experimental Physics”. Here is a little photo from that night. Enjoy!
View ArticlePoison in my reactor
40 protons and 48 neutrons is all it takes to have the second greatest neutron killer in a nuclear reactor. 88Zr has an enormous neutron capture cross section, reaching 6 orders of magnitudes higher...
View ArticleΏρες γραφείου εαρινού εξαμήνου
Υπενθυμίζονται οι ώρες γραφείου για συνεργασία με τους φοιτητές για το εαρινό εξάμηνο 2018-2019 Τρίτη 12΄00-13’00 Τετάρτη 10’00-11’00 Οι ώρες θα ισχύουν ως και τις 29.05.2019 (μία βδομάδα μετά το πέρας...
View ArticleCelebrating the International Year of Periodic Table at 1st High School of...
Just a little advertisement of an outreach event I have been preparing with my good old friend Yiota Manolidou, a physics teacher at the 1st High School of Kaisariani in Athens. I will drop by, talk to...
View ArticleAdvances in Nuclear Physics
My dream to upgrade the status of the Proceedings of the Annual Symposium of the Hellenic Nuclear Physics Society has finally passed the first critical phase: Five recent volumes, those from years 2014...
View ArticleLaTeX seminars
LaTeX seminars, back by popular demand! Μια σύντομη ανακοίνωση της πρόθεσής μου να οργανώσω ένα κύκλο σεμιναρίων για την εκμάθηση LaTeX σε φοιτητές του τμήματος Φυσικής του ΕΚΠΑ (ή και άλλων) εντός του...
View ArticleErasmus+ Nominations (UoA)
Σχετικά με ερωτήματα για τα nominations του εαρινού εξαμήνου προς ξένα πανεπιστήμια, οι ενδιαφερόμοι/ες παρακαλούνται να επικοινωνήσουν απευθείας με μένα για να τα στείλουμε εγκαίρως. Λόγω κατάληψης,...
View ArticleNuclear waste? These microbes might help with the cleanup
See the post originally published on Nature
View ArticleNuclear and Particle Physics Seminars at @uoaofficial
We have recently put our full archive of seminars online (since 2012). The majority of the items in the calendar contain a link to the PDF. Feel free to visit and read....
View ArticleThe Pioneering Maps of Alexander von Humboldt
https://www.smithsonianmag.com/history/pioneering-maps-alexander-von-humboldt-180973342/
View ArticleAstronaut Christina Koch Works in the Vacuum of Space
In the vacuum..! (never forget that) Full-size image is here
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