Comment on “Fe2: As simple as a <i>Herculean</i> labour. Neutral (Fe2), cationic (Fe2+), and anionic (Fe2−) species” [J. Chem. Phys. <b>142</b>, 244304 (2015)]

Hoyer, Chad E.; Manni, Giovanni Li; Truhlar, Donald G.; Gagliardi, Laura

doi:10.1063/1.4939241

Cited by 4 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…14, as if all the iron atoms Fe( 5 D) were in an M = 0 state. Assuming that the Fe atoms formed Fe 2 molecules would not help explain the observed lack of magnetic deflection as the ground state of Fe 2 is the highly paramagnetic 9 Σ g state [62][63][64].…”

Section: Additional Sge-type Explorations By Gerlach and Sternmentioning

confidence: 99%

A century ago the Stern-Gerlach experiment ruled unequivocally in favor of Quantum Mechanics

Friedrich

2023

Preprint

View full text Add to dashboard Cite

show abstract

Section: Additional Sge-type Explorations By Gerlach and Sternmentioning

confidence: 99%

A century ago the Stern-Gerlach experiment ruled unequivocally in favor of Quantum Mechanics

Friedrich

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Assuming that the Fe atoms formed Fe 2 molecules would not help explain the observed lack of magnetic deflection as the ground state of Fe 2 is the highly paramagnetic 9 Σ g state. [61][62][63] Otto Stern, too, undertook additional deflection experiments with a much-improved apparatus, see Table 2. Between 1926 and 1928, Stern and his co-workers at Stern's Institut für physikalische Chemie der Hamburgischen Universität inves-tigated magnetic deflection of water molecules (and concluded that the magnetic moment involved was on the order of the nuclear magneton) and Hg atoms, [50] K, Na, and Tl atoms, [51] hydrogen atoms, [52] Bi atoms, [54] Li atoms (with an estimate of whose head and body took the shape of the edge and groove of the Stern-Gerlach magnet reads another issue of the UZM Journal showcasing an image of a split molecular beam.…”

Section: Additional Sge-type Explorations By Gerlach and Sternmentioning

confidence: 99%

A Century Ago the Stern–Gerlach Experiment Ruled Unequivocally in Favor of Quantum Mechanics

Friedrich

2023

Israel Journal of Chemistry

View full text Add to dashboard Cite

In 1921, Otto Stern conceived the idea for an experiment that would decide between a classical and a quantum description of atomic behavior, as epitomized by the Bohr–Sommerfeld–Debye model of the atom. This model entailed not only the quantization of the magnitude of the orbital electronic angular momentum but also of the projection of the angular momentum on an external magnetic field – the so‐called space quantization. Stern recognized that space quantization would have observable consequences: namely, that the magnetic dipole moment due to the orbital angular momentum would be space quantized as well, taking two opposite values for atoms whose only unpaired electron has just one quantum of orbital angular momentum. When acted upon by a suitable inhomogeneous magnetic field, a beam of such atoms would be split into two beams consisting of deflected atoms with opposite projections of the orbital angular momentum on the magnetic field. In contradistinction, if atoms behaved classically, the atomic beam would only broaden along the field gradient and have maximum intensity at zero deflection, i. e., where there would be a minimum or no intensity for a beam split due to space quantization. Stern anticipated that, although simple in principle, the experiment would be difficult to carry out – and invited Walther Gerlach to team up with him. Gerlach's realism and experimental skills together with his sometimes stubborn determination to make things work proved invaluable for the success of the Stern–Gerlach experiment (SGE). After a long struggle, Gerlach finally saw, on 8 February 1922, the splitting of a beam of silver atoms in a magnetic field. The absence of the concept of electron spin confused and confounded the interpretation of the SGE, as the silver atoms were, in fact, in a 2S state, with zero orbital and 12 ${{1 \over 2}}$ spin angular momentum. However, a key quantum feature whose existence the SGE was designed to test – namely space quantization of electronic angular momentum – was robust enough to transpire independent of whether the electronic angular momentum was orbital or due to spin. The SGE entails other key aspects of quantum mechanics such as quantum measurement, state preparation, coherence, and entanglement. Confronted with the outcome of the SGE, Stern noted: “I still have objections to the idea of beauty of quantum mechanics. But she is correct.”

show abstract

Response to “Comment on ‘Fe2: As simple as a Herculean labour. Neutral (Fe2), cationic (Fe2+), and anionic (Fe2−) species”’ [J. Chem. Phys. 144, 027101 (2016)]

Καλέμος

2016

The Journal of Chemical Physics

View full text Add to dashboard Cite

Comment on “Fe2: As simple as a Herculean labour. Neutral (Fe2), cationic (Fe2+), and anionic (Fe2−) species” [J. Chem. Phys. 142, 244304 (2015)]

Cited by 4 publications

References 5 publications

A century ago the Stern-Gerlach experiment ruled unequivocally in favor of Quantum Mechanics

A century ago the Stern-Gerlach experiment ruled unequivocally in favor of Quantum Mechanics

A Century Ago the Stern–Gerlach Experiment Ruled Unequivocally in Favor of Quantum Mechanics

Response to “Comment on ‘Fe2: As simple as a Herculean labour. Neutral (Fe2), cationic (Fe2+), and anionic (Fe2−) species”’ [J. Chem. Phys. 144, 027101 (2016)]

Contact Info

Product

Resources

About