Maksud "forbidden transition" dalam kamus Corsica

SEBUTAN FORBIDDEN TRANSITION DALAM CORSICA

forbidden transition

APAKAH MAKSUD FORBIDDEN TRANSITION dalam CORSICA?

Mekanisme terlarang

Forbidden mechanism

Dalam fizik, mekanisme terlarang atau garis terlarang adalah garis spektrum yang dipancarkan oleh atom-atom yang menjalani peralihan energi yang dilarang secara nominal yang biasanya tidak dibenarkan oleh aturan pemilihan mekanik kuantum. Dalam fizik formal, ini bermakna proses tidak dapat diteruskan melalui laluan yang paling berkesan. Walaupun peralihan secara harfiah "dilarang", terdapat kebarangkalian kecil kejadiannya spontan, sekiranya atom atau molekul dinaikkan ke keadaan teruja. Lebih tepat lagi, terdapat kebarangkalian tertentu bahawa atom yang teruja itu akan membuat peralihan yang dilarang ke keadaan tenaga yang lebih rendah per unit masa; dengan definisi kebarangkalian ini jauh lebih rendah daripada itu untuk apa-apa peralihan yang dibenarkan oleh peraturan pemilihan. Oleh itu, jika keadaan boleh menimbulkan kegemparan melalui peralihan yang dibenarkan ia hampir pasti akan berbuat demikian daripada memilih laluan yang dilarang. Walau bagaimanapun, peralihan "terlarang" hanya agak tidak mungkin: nyatakan bahawa hanya boleh mereput dengan cara ini biasanya mempunyai jangka hayat milliseconds hingga beberapa saat, berbanding kurang daripada satu mikrosecond untuk pereputan melalui peralihan yang dibenarkan.

In physics, a forbidden mechanism or forbidden line is a spectral line emitted by atoms undergoing nominally "forbidden" energy transitions not normally allowed by the selection rules of quantum mechanics. In formal physics, this means that the process cannot proceed via the most efficient route. Although the transitions are nominally "forbidden", there is a small probability of their spontaneous occurrence, should an atom or molecule be raised to an excited state. More precisely, there is a certain probability that such an excited atom will make a forbidden transition to a lower energy state per unit time; by definition this probability is much lower than that for any transition permitted by the selection rules. Therefore, if a state can de-excite via a permitted transition it will almost certainly do so rather than choosing the forbidden route. Nevertheless, "forbidden" transitions are only relatively unlikely: states that can only decay in this way usually have lifetimes of order milliseconds to seconds, compared to less than a microsecond for decay via permitted transitions.

Definisi forbidden transition dalam kamus Corsica

Takrif peralihan terlarang dalam kamus adalah peralihan elektronik dalam atom, molekul, dan lain-lain, yang tidak dibenarkan oleh peraturan pemilihan berpol elektrik.

TERJEMAHAN FORBIDDEN TRANSITION

Cari terjemahan forbidden transition kepada 25 bahasa dengan penterjemah Corsica pelbagai bahasa kami.

Terjemahan forbidden transition dari Corsica ke bahasa lain yang dibentangkan dalam bahagian ini telah diperolehi menerusi terjemahan statistik automatik; di mana unit terjemahan penting adalah perkataan «forbidden transition» dalam Corsica.

• Penterjemah Corsica - Cina: 禁戒跃迁
• Penterjemah Corsica - Czech: transición prohibida
• Corsica: forbidden transition
• Penterjemah Corsica - Hindi: मना संक्रमण
• Penterjemah Corsica - Amhara: الانتقال ممنوع
• Penterjemah Corsica - Rusia: запрещается переход
• Penterjemah Corsica - Punjabi: transição proibida
• Penterjemah Corsica - Basque: নিষিদ্ধ স্থানান্তর
• Penterjemah Corsica - Frisia: transition interdite
• Penterjemah Corsica - Melayu: Peralihan yang dilarang
• Penterjemah Corsica - Chichewa: verbotenen Übergang
• Penterjemah Corsica - Jepun: 禁制遷移
• Penterjemah Corsica - Kreol Haiti: 금지 전환
• Penterjemah Corsica - Jerman: Transisi ingkang boten pareng
• Penterjemah Corsica - Vietnam: chuyển cấm
• Penterjemah Corsica - Tagalog: தடை செய்யப்பட்ட மாற்றம்
• Penterjemah Corsica - Marathi: निषिद्ध संक्रमण
• Penterjemah Corsica - Turki: Yasak geçiş
• Penterjemah Corsica - Itali: transizione proibita
• Penterjemah Corsica - Poland: przejście zabronione
• Penterjemah Corsica - Ukraine: забороняється перехід
• Penterjemah Corsica - Romania: tranziție interzis
• Penterjemah Corsica - Cina: απαγορεύεται η μετάβαση
• Penterjemah Corsica - Afrikaans: verbode oorgang
• Penterjemah Corsica - Swahili: förbjuden övergång
• Penterjemah Corsica - Parsi: forbudt overgang

CORSICA BUKU YANG BERKAIT DENGAN «FORBIDDEN TRANSITION»

Ketahui penggunaan forbidden transition dalam pilihan bibliografi berikut. Buku yang berkait dengan forbidden transition dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.

Optical Spectra and Chemical Bonding in Transition Metal ...

Figure 3 shows calculated spectra similar to the fit in Fig. 2a, but for coupling strengths γ varying from 0 cm-1 to 900 cm-1. It is obvious that the forbidden transition, denoted by the circle in Fig. 3a, gains intensity through coupling with the broad, ...

Thomas Schönherr, Christian Klixbüll Jørgensen, 2004

Principles of Lasers

6.22 for the three cases: (1) optically allowed transition, (2) optically forbidden transition involving no change of multiplicity, (3) optically forbidden transition involving a change of multiplicity. In all three cases, the peak value of has been ...

Orazio Svelto, 2010

Chemical Bonds: An Introduction to Atomic and Molecular ...

... an example of such a transition. The e value of the 7r* -» n* band in C2H4 is approximately 104. An important example of a forbidden transition is the excitation of a nonbonding 2p oxygen electron in molecules containing the carbonyl group ...

Harry B. Gray

Spectroscopy

The forbidden transition is a result of the excitation of one electron from the lone pair present on the heteroatom to an antibonding n orbital. For example, the n — > 7t* transition near 300 nm in case of carbonyl compounds with E^ value ...

Dr. B. K. Sharma, 1981

Instrumental Methods of Chemical Analysis

The forbidden transition is a result of the excitation of one electron from the lone pair present on the heteroatom to an antibonding tc* orbital. For example, the n -» 71* transition near 300 nm in case of carbonyl compounds with value between ...

Dr. B. K. Sharma, 2000

Catalog of National Bureau of Standards publications, 1966-1976

Forbidden; Transition probability; Allowed; Atomic; Discrete; SP320. Suppt. 1. SP305-3. Forbidden; Transition probability; Allowed; Atomic; Discrete; M278 Supplement. SP305-1. Forbidden bandgap; Phonpns; Copper oxide; Cuprous oxide; ...

United States. National Bureau of Standards. Technical Information and Publications Division, Betty L. Burris, Rebecca J. Morehouse, 1978

Optical Materials and Applications

... 25–27 direct forbidden transition, 27–28 direct interband transitions direct allowed transition, 25–27 direct forbidden transition, 27–28 fundamentals, 24–25 direct transition, 40–42 dispersion free carrier dispersion, 19 fundamentals, 81 oxide ...

Moriaki Wakaki, 2012

Nuclear Physics: Principles and Applications

In a forbidden transition, we cannot assume that the matrix element M is independent of momentum, as we could for an allowed transition. A consequence of this is that there is an effect on the shape of the B-particle energy spectrum when L is ...

John Lilley, 2013

Techniques and Methods in Biology

Forbidden transition: n —> it * transition is an example. In this transition, a carbonyl n electron of say, a saturated ketone is to be promoted to an orthogonal (perpendicular) 7T * orbital (n 1 7T *). There would be no orbital overlap for such 90° ...

Ghatak K. L.

The Triplet State

In an atom a symmetry-forbidden transition can occur only as an electric quadrupole or a magnetic dipole transition, and this means that the transition probability is at most 10~6 times the probability of an allowed transition. In a molecule a ...

A. B. Zahlan, 1967

BARANGAN BERITA YANG TERMASUK TERMA «FORBIDDEN TRANSITION»

Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah forbidden transition digunakan dalam konteks perkara berita berikut.

Cold-atom random laser simulates stellar clouds

This was done by adjusting the wavelength of the tunable laser such that the emitted light corresponded to that of a forbidden transition in the ... «physicsworld.com, Mei 13»

Experiment tests underpinnings of quantum field theory, Bose …

... the otherwise bose-statistics forbidden transition. The most common isotopes of barium, barium-138 and barium-136, have zero nuclear spin, ... «UC Berkeley, Jun 10»

Good fortune from a broken mirror

Because boson exchange mixes the state with the ( ) state, there is a tiny transition amplitude for this otherwise forbidden transition. «Physics, Ogo 09»