Horia Hulubei (ˈhori.a huluˈbej; November 15, 1896 – November 22, 1972) was a Romania

Romania

Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

n atomic/nuclear physicist, known for his contributions to the development of X-ray spectroscopy

X-ray spectroscopy

X-ray spectroscopy is a gathering name for several spectroscopic techniques for characterization of materials by using x-ray excitation.-Characteristic X-ray Spectroscopy:...

.

Education

He studied at the University of Iaşi and in Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 at the Sorbonne

Sorbonne

The Sorbonne is an edifice of the Latin Quarter, in Paris, France, which has been the historical house of the former University of Paris...

, with the Nobel laureate Jean Perrin as his PhD advisor; he obtained his Ph.D. from the Paris-Sorbonne University for his work with Jean Perrin. His Ph.D. thesis with the title "Contribution to the study of quantum diffusion of X-rays" was defended in 1933 in Paris in front of an examination committee chaired by Nobel laureate Marie Curie

Marie Curie

Marie Skłodowska-Curie was a physicist and chemist famous for her pioneering research on radioactivity. She was the first person honored with two Nobel Prizes—in physics and chemistry...

.

Scientific achievements

With the help of his advanced X-ray spectroscopy equipment he observed several previously unidentified X-ray spectral lines, and subsequently came to the decision that such lines are associated with new elements. Then, he claimed and published the discovery of a new element "moldavium" in 1936, the discovery of "sequanium" in 1939 and that of "dor" in 1945. Later, however, it was shown that the reported X-ray lines did not belong to new elements.

For his many scientific achievements the National Institute for Physics and Nuclear Engineering in Romania was named after him -- Horia Hulubei National Institute of Physics and Nuclear Engineering - IFIN HH. He was the Founder and First Director of the Institute of Atomic Physics (IFA) in Bucharest, Romania.

University teaching

During the early 1960s and 1970s he was also a Professor of Atomic Physics in the Department of Atomic and Nuclear Physics of the School of Physics at the University of Bucharest

University of Bucharest

The University of Bucharest , in Romania, is a university founded in 1864 by decree of Prince Alexander John Cuza to convert the former Saint Sava Academy into the current University of Bucharest.-Presentation:...

, where he delivered elegant and clear lectures on the Compton effect and inelastic Compton scattering

Compton scattering

In physics, Compton scattering is a type of scattering that X-rays and gamma rays undergo in matter. The inelastic scattering of photons in matter results in a decrease in energy of an X-ray or gamma ray photon, called the Compton effect...

/resonant inelastic X-ray scattering

Resonant inelastic X-ray scattering

Resonant Inelastic X-ray Scattering is an x-ray spectroscopy technique used to investigate the electronic structure of molecules and materials....

(RIXS).

Publications

• Course Notes of Physical Chemistry, Ed. Academiei, Bucharest, 1940. ( "Curs de chimie fizică "(1940))
• X-ray Spectroscopy ("Spectroscopia X"). (1948)
• The Structure of Matter. "Structura materiei" (1950)

Publications at the Library of Congress

• Library of Congress